Contract Beauty

Tag: vitamin C serum

  • Private Label Vitamin C Serum Manufacturing: What to Decide Before You Order

    Yes, you can private label a vitamin C serum, and most contract manufacturers will take the project. But the decision that sets your price, packaging, lead time and failure rate happens before you contact anyone: which form of vitamin C you order and at what concentration. L-ascorbic acid is the most potent and the least stable; derivatives like sodium ascorbyl phosphate or ethyl ascorbic acid are gentler and far easier to keep alive on a shelf. Pick the form first, then pick the route and the factory.

    A vitamin C serum looks simple and behaves like one of the fussiest products in skincare. Unlike a lip balm or a basic lotion, the active ingredient fights you the whole way: pure vitamin C oxidises in contact with air, light and water, turning amber, smelling sour and losing its effect. That is why the upstream choices matter more here than almost anywhere else in private label beauty. This guide walks the decisions in the order a founder should actually make them.

    White label (ready-made / ready-to-go formula)
    You apply your brand to an existing, already-stabilised formula. Minimum order from a manufacturer like Moe’s Group starts at 200 units. Fastest and lowest upfront cost of the three routes — but only if a suitable vitamin C base already exists.
    Private label (custom formulation)
    Chemists develop a formula to your brief: your derivative, concentration, pH and base. Minimum order starts at 1,000 units. More brand control than white label, and more lead time, because the stability work has to finish before production can start.
    Contract manufacturing
    The broad manufacturing service a brand buys. Formulation, formula ownership, pricing and lead time are set per project, so the cost and timeline depend on what you agree rather than on the label alone.
    Chuffy, a small round anxious creature in pencil sketch, stares at a serum bottle that has turned brown.
    Chuffy opens the sample box and finds the serum has already turned amber. Vitamin C oxidised before launch day.

    What form of vitamin C are you actually ordering?

    “Vitamin C serum” is not one product. The industry uses at least five common forms, and they behave so differently that choosing one is really choosing your packaging, your pH and how hard your manufacturer has to work to keep the serum stable. Get this right and the rest of the project gets easier.

    Form Solubility Stability Typical pH Notes
    L-Ascorbic Acid (LAA) Water Moderate — needs protection 2.8–3.5 Most potent; highest irritation risk; the most formulation and packaging work.
    3-O-Ethyl Ascorbic Acid (EAA) Water and oil High 4.0–5.5 A practical choice for everyday brightening serums.
    Sodium Ascorbyl Phosphate (SAP) Water High 6.0–7.0 Gentle and stable; common in sensitive-skin formulas.
    Tetrahexyldecyl Ascorbate (THD) Oil Very high 5.5–6.5 Oil-soluble, higher cost, tolerant of standard packaging.
    Ascorbyl Glucoside (AA-2G) Water High 5.0–7.0 Slow-release; well suited to gentler formulas.

    LAA is the form most shoppers mean when they picture “vitamin C,” and it is the one that gives a serum its brightening reputation and its reputation for going off. Derivatives trade a little immediacy for a serum that survives shipping and a year on a shelf. A common commercial choice is a stabilised derivative at a workable pH; a common premium choice is LAA done carefully. Neither is wrong — but they are different manufacturing jobs, so decide before you ask for a quote. For an independent view of what finished serums on the market actually use, Wirecutter’s vitamin C serum reviews are a useful consumer-side reference.

    Chuffy holds up two bottles, one labelled white label and one labelled custom, unsure which to pick.
    Two routes, two minimum orders. Chuffy learns the choice of vitamin C form is the decision that sits above both.

    White label or custom formulation — what each means for vitamin C?

    This is where the pinned terminology matters, because the two routes carry different minimum orders and different timelines, and vitamin C exaggerates the gap between them.

    White label means you take a formula the manufacturer has already developed and stabilised, choose your packaging, and apply your label. The minimum order is 200 units. It is the fastest and lowest upfront-cost route — but it only works if the manufacturer already holds a vitamin C base with the derivative, concentration and feel you want. If you have a specific derivative or a particular concentration in mind, a stock formula may not match it.

    Private label / custom formulation means chemists build the serum to your brief. The minimum order is 1,000 units. You get more control and the formula is tailored to your positioning, but it adds lead time, and with vitamin C that extra time is not padding — it is the stability testing described below, which cannot be rushed without risking a serum that browns after launch.

    So the ordering holds: white label sits below private label, which sits below broader contract manufacturing, on upfront cost, on lead time and on how much brand control you take on. But do not translate that into a dollar figure or a number of days from the tier alone — vitamin C’s own difficulty, your packaging and your testing plan move those numbers more than the label does. If you are still weighing suppliers in general, Moe’s Group has a plain-language checklist for how to choose a private label manufacturer.

    Chuffy peers into an oven labelled 40 degrees, watching three serum bottles sweat on a shelf.
    Accelerated stability testing: 40C and 75% humidity for weeks, so the formula fails in the lab and not in the customer’s bathroom.

    What does stability testing look like, and why does it add time?

    Here is the part that goes wrong, stated plainly. Pure vitamin C oxidises — LAA converts to dehydroascorbic acid and then to diketogulonic acid — and the visible result is an amber or brown serum, a sour odor, lost brightening performance and a wave of returns. A responsible manufacturer catches that in the lab, not in your customers’ bathrooms.

    That is what stability testing is for. The standard pairing is an accelerated test at 40°C and 75% relative humidity for several weeks, run alongside a real-time test at 25°C and 60% relative humidity that continues for up to 24 months. The accelerated test is the one that adds weeks to a custom timeline, because the formula has to prove it survives heat and humidity before production is locked. Technical stability protocols along these lines are described by suppliers such as AJC Cosmolabs (competitor source, cited for technical context only; retrieved 2026-10-02).

    Stability also drives packaging. LAA formulas strongly prefer airless pumps, opaque or frosted glass, and often nitrogen-purged filling to keep oxygen out of the bottle. Derivative-based formulas are more forgiving and can tolerate standard dropper bottles, though UV-protective packaging still helps. Ask any manufacturer for a redacted certificate of analysis from a prior vitamin C run; one that will not show you stability data is telling you something.

    Chuffy stands at a crossroads signpost pointing to small batch, EU filing, and clinical LAA.
    Not every job fits one factory. Chuffy maps where to go when a manufacturer is the wrong fit.

    Where is Moe’s Group the wrong fit for a vitamin C serum?

    An honest guide has to say where a manufacturer does not fit, so here it is. Moe’s Group is a US (Chatsworth, California) contract manufacturer that is FDA registered. That is a facility status; cosmetics have no equivalent government sign-off at all (FDA cosmetics labeling guidance). It suits established and growth-stage brands ordering 200+ units white label or 1,000+ custom, working in standard serum formats with stable derivatives. It is likely the wrong fit in these cases:

    If you need… Look at instead (checked 2026-10-02)
    Under 200 units — a proof-of-concept or launch test AJC Cosmolabs and other low-MOQ US labs; confirm their current minimum directly, as MOQs change.
    EU or UK launch with CPNP/PIF filing bundled into manufacturing An EU-based manufacturer such as DEL’LA SOFT (Turkey); verify current MOQ and included regulatory docs on their own page.
    Asia-first supply chain or direct China sourcing China OEMs such as Zerun Cosmetic or Lezha Beauty; check their own current terms.
    Clinical-grade high-percentage LAA in nitrogen-flushed airless packs Verify any manufacturer’s filling line handles high-LAA formats first; specialist labs such as SkinCraft Lab may suit. Do not assume any single factory, including Moe’s, runs this format — ask.

    One piece of market context worth knowing: according to Wirecutter, the patent on SkinCeuticals’ original CE Ferulic formula (roughly 10% LAA with 1% ferulic acid and 1% vitamin E) expired in 2025, so any GMP lab can now reproduce that combination. If that is the serum you want, it is effectively a commodity formula today — price-shop it widely rather than paying a premium for the recipe. For scale context, the US vitamin C serum market is estimated in the low billions of dollars, with stabilised derivatives making up a growing share of new launches (IndexBox, 2026).

    What should you ask a manufacturer before you sign?

    Walk in with these questions and you will sort a capable partner from a hopeful one quickly:

    • Which vitamin C form and concentration is in your stock serum, and can you formulate the one I want?
    • What pH does the finished formula hold, and how do you keep it there?
    • Does your filling line offer airless or nitrogen-purged filling for LAA formats?
    • Can you share a redacted CoA and stability data from a prior vitamin C production run?
    • White label or custom for my case — and what minimum order and timeline does each carry for this serum specifically?

    The answers tell you whether the factory treats vitamin C as a routine job or a serious one. It should be the latter.

    Frequently asked questions

    Can you private label a vitamin C serum? Yes. You can apply your brand to an existing stabilised formula (white label, from 200 units) or have one developed to your brief (custom formulation, from 1,000 units). The form of vitamin C you choose matters more than the route.

    Which vitamin C form is most stable? Derivatives such as tetrahexyldecyl ascorbate, sodium ascorbyl phosphate and ethyl ascorbic acid are considerably more stable than pure L-ascorbic acid, which is the most potent but the most prone to oxidising.

    What concentration is typical? Leave-on serums commonly sit in the 5–20% range, with 10–15% widely cited as a practical sweet spot. The right number depends on the form and your audience.

    Why do vitamin C serums turn brown? That amber or brown color is oxidation — the vitamin C degrading. Low pH, antioxidant co-ingredients like ferulic acid and vitamin E, and air-tight opaque packaging all slow it down.

    What minimum order should I expect? From a manufacturer like Moe’s Group, 200 units for a ready-made white-label formula and 1,000 units for a custom formulation. Other manufacturers set their own minimums; confirm each directly.

    If you have decided on your form, concentration and route and want to talk specifics with a US manufacturer, Moe’s Group takes project enquiries through its product inquiry form.

    Chuffy proudly holds an airless pump bottle of clear serum, finally not brown, with a small relieved smile.
    Clear, stable, and still clear a year later. Chuffy got there by deciding the hard things before placing the order.

  • Private Label Serum Manufacturing: What to Know First

    A serum is a format, not a regulatory category
    — and that one fact changes how you pick a private label serum
    manufacturer. The word “serum” tells a factory nothing about whether your
    product is a cosmetic or an over-the-counter drug; the claims on your label
    decide that. A vitamin C, hyaluronic acid, niacinamide or peptide serum is a
    cosmetic, but a salicylic acid serum carrying an acne treatment claim is an OTC
    drug and needs a different class of manufacturer entirely. On top of that, serums are
    technically unforgiving — active stability, pH and packaging make the
    factory’s formulation competence matter more than it does for a simple
    moisturizer. Sort the regulatory question first, then judge who can actually
    make your formula stable.

    If you already know how white label, private label and contract manufacturing
    differ — and if not,
    start
    there     — you know the commercial model. This piece is about what changes
    when the product is a serum rather than a moisturizer or a body wash. Most of the
    decision is the same. But a few serum-specific facts catch founders who assume
    the skincare playbook transfers cleanly, and one of them — the
    cosmetic-versus-drug line — can put your launch on the wrong regulatory
    path before you have picked a bottle.

    Is your serum a cosmetic or an OTC drug?

    This is the first question, and it is decided by the claims on your label, not
    by the liquid in the bottle. Under United States law a product is a
    cosmetic if it is intended to cleanse or beautify or support the
    appearance of the skin, and a drug if it is intended for the
    treatment or prevention of a condition. Most serums are cosmetics. A vitamin C serum that “supports
    the appearance of brighter, firmer skin”, a hyaluronic acid serum that “helps
    skin retain moisture”, a niacinamide or peptide serum that “supports the
    appearance of a smoother complexion” — all cosmetics, making
    structure-function claims only.

    The line moves the moment you make a treatment claim on a drug active. The
    clearest case is salicylic acid: a salicylic acid serum carrying an acne
    treatment claim on its label is an over-the-counter drug under
    the FDA acne monograph,
    21 CFR Part 333. An OTC drug serum is a different
    manufacturing project: it must be made under OTC drug current Good Manufacturing
    Practice
    (21 CFR Part 211), by a facility with a drug establishment
    registration, and it carries a Drug Facts panel on the label. Most cosmetics
    contract manufacturers — Moe’s Group, the contract manufacturer that
    supports this publication, included — are set up as cosmetics facilities
    under ISO 22716, not as OTC drug manufacturers. So before you fall in love with
    an “acne-clearing” serum as your hero product, know that you are shopping for a
    drug manufacturer, and the shortlist is different.

    One word to keep exact through all of this: a cosmetics facility is
    FDA registered. Registration became mandatory for cosmetics
    under MoCRA, the Modernization of Cosmetics Regulation Act of 2022, and you can
    read what it does and does not mean on the FDA’s own
    cosmetic facility registration page. It is a filing status.
    It is never “FDA approved” — the FDA does not approve cosmetics or the
    facilities that make them. A manufacturer who tells you their serum has FDA
    approval has described something that does not exist.

    Serum active Typical status What the manufacturer needs
    Vitamin C (ascorbic acid, derivatives) Cosmetic Cosmetic facility, ISO 22716
    Hyaluronic acid Cosmetic Cosmetic facility, ISO 22716
    Niacinamide Cosmetic Cosmetic facility, ISO 22716
    Peptides (signal, carrier, etc.) Cosmetic Cosmetic facility, ISO 22716
    Retinol (cosmetic anti-ageing claims) Cosmetic Cosmetic facility, ISO 22716
    Salicylic acid with acne treatment claims OTC drug OTC drug cGMP (21 CFR Part 211), drug establishment registration, Drug Facts label
    Chuffy, a small round anxious sketched creature, holds a single serum dropper bottle and stares at two doors behind it -- one labelled COSMETIC, one labelled OTC DRUG -- unsure which one the same bottle is supposed to walk through.
    Chuffy thought ‘serum’ was the category. It is only the shape of the bottle. The words he prints on the label decide which door — and which factory — it belongs to.

    What makes serum manufacturing technically different?

    A serum is a high-active, low-viscosity leave-on product, and that combination
    is where formulation competence stops being a nice-to-have. Three things bite
    harder than they do in a thicker cream:

    • Active stability. The ingredients that sell serums are
      often the ones that degrade fastest. L-ascorbic acid (vitamin C) oxidises
      in water and light, turning yellow then brown and losing activity; retinol
      degrades with heat, light and oxygen. A manufacturer’s job is to formulate
      and package around that — derivative forms, antioxidant systems, pH
      control — and to prove it with stability testing rather than assume
      it. Ask what stability programme a formula goes through before it ships.
    • pH. Many serum actives only work, and only stay safe to
      preserve, inside a narrow pH window — low for a vitamin C serum to
      keep ascorbic acid effective, higher for others. Getting it wrong quietly
      kills either the active or the preservative system.
    • Packaging. Packaging is part of the formula for a serum,
      not an afterthought. Air- and light-sensitive actives need airless pumps,
      amber or opaque glass, or single-dose formats; a clear dropper bottle on a
      shelf is a design decision that can shorten shelf life. A serum
      manufacturer should be advising on primary packaging, not just filling
      whatever bottle you hand them.

    The practical takeaway: a strong moisturizer or body-wash portfolio does not
    prove a factory makes a stable serum. When you shortlist, ask specifically about
    serum work — which actives they run, how they handle vitamin C or retinol
    stability, and what packaging they recommend for your active. For peptide serums
    in particular, formulation gets more involved still; Moe’s Group’s own
    peptide
    skincare manufacturing page     walks through the signal, carrier and
    neurotransmitter-affecting peptide families and the stability and delivery-system
    questions that come with them — a useful map of what a peptide serum brief
    actually involves.

    Chuffy watches a clear dropper bottle of bright vitamin C serum turn from yellow to brown on a sunny windowsill, holding a thermometer and a pH strip and looking alarmed, while an amber airless pump bottle sits safely in the shade beside it.
    Chuffy learned the hard way that a serum’s packaging is part of its formula. Clear glass on a windowsill browned his vitamin C; the amber airless bottle beside it did not.

    White label, private label or custom — which route for a serum launch?

    The routes are the same as for any beauty product; only the examples change.
    The ordering is fixed and worth committing to memory, because it is inverted all
    over the industry: white label < private label < contract
    manufacturing    , ascending on cost, on lead time and on how much control
    you have over the formula. The client’s own
    three-tier definitions are the source of truth for that
    ordering.

    White label (stock serum, your label)
    A generic stock serum — a catalogue vitamin C or hyaluronic acid
    formula — sold to many retailers with no formula modification and no
    exclusivity. Your branding on a serum competitors can sell identically. The
    cheapest and fastest route, and the quickest way to test
    whether a serum concept sells at all. The manufacturer owns the formula.
    Private label (stock serum, made exclusive and lightly customised)
    A stock serum base made exclusive to one brand with some customisation
    — fragrance, minor tweaks, packaging — within its validated
    stability window. Costs more and takes longer than white label; sits in the
    middle. The base formula still belongs to the
    manufacturer.
    Contract manufacturing (custom serum formula)
    A serum developed to your own specification — your active at your
    concentration, your texture — with ownership negotiable
    and set in the contract. The most expensive and slowest
    route, because the formulation, the stability testing and the packaging
    work are all built from scratch. For serums this is where the multi-month
    timelines live.

    One serum-specific wrinkle sits on top of that ordering: because serum
    performance lives in the active and its stability, the private-label “light
    customisation” band is narrower than it looks. Swapping a vitamin C form or
    nudging the pH to change how a serum feels is a base change, not a surface tweak,
    and a base change invalidates the existing stability and preservative-efficacy
    data. If your idea needs the active reworked, you are in contract manufacturing
    territory whether the quote calls it that or not.

    Chuffy climbs three ascending steps drawn as serum dropper bottles -- a small plain WHITE LABEL bottle at the bottom, a branded PRIVATE LABEL bottle in the middle, and a tall custom CONTRACT bottle at the top -- with an arrow up the side reading COST, TIME, CONTROL.
    Cost, lead time and control all rise as Chuffy climbs. White label sits lowest; contract manufacturing sits highest. He finally stopped getting the steps backwards.

    Which manufacturers work for serum specifically?

    A comparison that always concludes “use the site’s sponsor” is worth nothing,
    so here is the honest version, including where Moe’s Group is the wrong lane. Moe’s
    Group is a full-service US contract manufacturer of skincare, hair care and body
    care in one FDA-registered facility; for a cosmetic serum — vitamin C,
    hyaluronic acid, niacinamide, retinol or peptide, developed to your brief and
    scaled in the US, including its copper-peptide and other peptide specialities
    — it is a genuine fit. Where it is not the right lane, and who to look at
    instead, is below.

    Two honesty notes before the table. First, on images: a round-up like this
    should show real product photographs, and this site’s rule is that they must be
    genuine images from public sources — never stock, never generated. I could
    not source hotlink-safe, genuinely-public product photos for these specific
    manufacturers today without risking a placeholder, so this is a text comparison
    rather than a product-image grid. Second, every entry describes a manufacturing
    positioning to confirm at the source on the day you brief it — not
    a stated MOQ, price or capability as fact. The competitor detail was compiled from
    third-party manufacturer round-ups and each company’s own site (checked 15
    September 2026), and those numbers move; verify before you rely on them.

    If your situation is… Why a full-service cosmetics manufacturer like Moe’s Group may be the wrong lane Where to look instead (confirm at source)
    An OTC drug serum (salicylic acid with acne claims, benzoyl peroxide) These are OTC drugs, needing OTC cGMP and a drug establishment registration. Moe’s Group positions as a cosmetics facility under MoCRA and ISO 22716, with no published drug registration — a different capability. Prime Matter Labs is described in third-party round-ups as handling OTC products including acne formulas — verify its drug registration directly (checked 15 September 2026).
    A very small first run (tens of units, testing a concept) A founder who needs a handful of test units may sit below any full-service contract manufacturer’s practical floor. Catalogue/dropship stock-serum routes such as Selfnamed, or small-batch houses such as Trilogy Laboratories (Florida). Both are described as taking very low minimums — confirm current terms and whether custom formulation is available (checked 15 September 2026).
    A serum-only specialist (you want a dedicated serum house, not full-service bodycare) Not a weakness in Moe’s Group, but some founders specifically want a manufacturer whose whole catalogue is serums. Serum specialists such as SkinCore Labs list vitamin C, retinol, niacinamide, peptide and hyaluronic acid serums — their site states its own certifications and terms, which you should verify independently (checked 15 September 2026).
    A tinted or colour-correcting serum (BB-serum, shimmer) A tint pushes the product into colour cosmetics, which is a distinct chemistry not in Moe’s Group’s published portfolio. A skincare-plus-colour manufacturer — ask any candidate directly whether they run colour cosmetics, as few generalist skincare houses do (checked 15 September 2026).
    Lowest unit cost at high volume, formula already validated Once a formula is proven and you are scaling hard, offshore manufacturing can beat a US contract manufacturer on unit cost. That is a legitimate strategic trade-off, not a criticism of either. Large offshore manufacturers such as those in South Korea and Italy — weigh the unit-cost saving against longer lead times, import logistics and harder oversight (checked 15 September 2026).

    None of the entries above states a manufacturer’s MOQ, price or ownership terms
    as fact — those are questions for each supplier and they change. Whichever
    route you choose, verify the basics yourself: any manufacturer’s registration can
    be checked against the FDA’s
    cosmetic facility registration guidance, and any ISO 22716
    certificate a factory cites can be looked up at
    IAF CertSearch. Moe’s
    Group’s own
    how-to-choose
    guide     walks through the same verification checklist.

    Chuffy at a manufacturer's counter holding a checklist headed ASK: reading out 'Is my serum a cosmetic or a drug?', 'How do you keep the vitamin C stable?' and 'What's your smallest run?' while a manufacturer behind the counter lays three different sample bottles on the table.
    Three questions that decide the whole shortlist: is it a drug, can they keep the active stable, and can they run a batch as small as Chuffy needs. He asked before signing, not after.

    Frequently asked questions

    Can I launch a salicylic acid serum as a cosmetic?

    Only if you make no drug claims. Salicylic acid appears in cosmetics as an
    exfoliant, but the moment the label carries an acne treatment or clearing claim
    it becomes an over-the-counter drug under the FDA acne monograph (21 CFR Part
    333).
    An OTC drug serum must be made under OTC drug cGMP by a facility with a drug
    establishment registration and carry a Drug Facts panel — a different class
    of manufacturer from a cosmetics contract manufacturer. Decide which product you
    are making before you shortlist factories.

    What is the minimum order for a custom serum?

    It depends entirely on the manufacturer and the route. White label stock
    serums can start very low; a fully custom serum, with its own formulation and
    stability programme, carries a higher minimum because the development work has to
    be amortised across the run. No single number applies, and any MOQ you are quoted
    should be put in writing for your specific format before you rely on it. Treat
    MOQ as a conversation with each supplier, not a published fact.

    How long does serum development take?

    A white label or lightly-customised private label serum can move quickly
    because the base formula already exists and is already stability-tested. A custom
    serum takes months, not weeks: formulation, then stability testing — often
    including accelerated stability to predict shelf life — then production
    scheduling. Vitamin C and retinol serums in particular need real stability data
    because the active degrades, so do not compress that stage to hit a launch date.

    What packaging does a vitamin C serum need?

    Air- and light-protective packaging. L-ascorbic acid oxidises on exposure to
    air and light, so a clear dropper bottle on a shelf will shorten its usable life.
    Airless pumps, amber or opaque glass, or single-dose formats all help, and the
    choice interacts with the formula — which is why the manufacturer should be
    recommending primary packaging as part of the formulation, not filling whatever
    bottle you supply.

    Is my manufacturer’s ISO 22716 certificate valid for serums?

    Check the scope. ISO 22716 is the Good Manufacturing Practice standard for
    cosmetics, and a certificate is issued for a defined scope. A certificate is
    strong evidence a factory runs a disciplined cosmetics operation, but read what
    it covers and verify it at IAF CertSearch rather than taking a framed copy at face
    value. Note too that ISO 22716 is a cosmetics standard — for an OTC drug
    serum you additionally need a manufacturer working under OTC drug cGMP.

    Trying to work out whether your serum is a cosmetic or an OTC
    drug, and which US manufacturer can keep your active stable? Ask a contract
    manufacturer directly about its serum work, stability testing, packaging, ISO
    22716 scope and minimum order in writing — Moe’s Group takes enquiries
    through its
    product inquiry form.

    Chuffy, finally calm, holds a neatly branded amber airless serum bottle with a small tick beside it, while a separate DRUG FACTS salicylic acid serum sits behind glass in a case marked DIFFERENT FACTORY -- Chuffy giving it a knowing look rather than reaching for it.
    Chuffy shipped the cosmetic serum he could actually make — stable, in the right bottle — and left the acne drug for the day he has a drug manufacturer. Right product, right factory, in that order.

    Disclosure: Contract Beauty is published with the
    support of Moe’s Group, a contract manufacturer named in this article. We name
    competing suppliers and say where Moe’s Group is the wrong choice because a
    comparison that always concludes the same way is worth nothing. Manufacturing
    models, certificate scopes and minimum order quantities change; confirm current
    terms with any supplier before you commit. See our
    editorial policy.