Guide to Choosing a Factory for OEM Production of Medical Device-Grade Medical Dressings: 5 Hard Thresholds Brand Owners Must Clarify in 2026

Having been in dressing OEM for over a decade, I've seen too many brand owners stumble after choosing the wrong factory. Some chase low unit prices, only for their products to fail microbiological sampling and the entire batch to be seized by the drug administration; some go through a bunch of "middlemen" who subcontract the order, and delivery schedules keep getting delayed until the distributor contract expires and the goods still haven't been produced; even more absurd, some brands start distributing without even verifying whether the factory has a Class II medical device production license—which amounts to unlicensed operation.

Today I'll break down the 5 hard thresholds for choosing a factory, all summarized from our 15 years of OEM实战 at Weitai Group. Brand owners can check themselves against these to avoid detours.

Threshold 1: Qualifications—Don't Touch Factories Without the "Three Certificates"

For OEM production of medical device-grade medical dressings, a factory must hold at least the following three certificates:

• Medical Device Production License (Class II, covering the corresponding product classification)
• Medical Device Registration Certificate (Class II, product name consistent with or covering your product)
• Quality Management System Certification (ISO 13485, the quality management standard for the medical device industry)

All three are indispensable. Without a production license, the factory simply does not have production qualifications; without a registration certificate, the products made cannot be marketed; without ISO 13485 certification, the system is substandard, and a surprise inspection by the drug administration will catch problems every time.

In practice, several details also need attention:

First, the "product name" on the registration certificate must cover the product you want to make. For example, if you want to make a "recombinant collagen repair dressing" and the factory's registration certificate name is "medical cold compress"—although both are Class II medical device-grade, the product names do not correspond, so this certificate cannot be used. Brand owners must verify word by word.

Second, the "production scope" of the production license must cover your product category. Class II medical device production licenses are registered by product classification. Some factories only have a license for "6864 Medical Hygiene Materials"; if your product falls under "6866 Medical Polymer Materials," the licensed scope does not match.

Third, the ISO 13485 certificate must be within its validity period. This certificate is reviewed every three years. Some factories' certificates have expired but have not been updated. Brand owners must verify the original certificate and check it on the CNCA website.

Weitai Group currently holds over 110 Class II medical device registrations and filings, our production license covers multiple product classifications, and our ISO 13485 certification remains valid—brand owners coming to cooperate need not worry at all about qualifications.

Threshold 2: Production Capacity and Delivery Capability—Don't Just Look at Equipment Count

Many brand owners ask factories about production capacity, and their first question is "How many production lines do you have?"—this question is actually meaningless. The number of production lines does not equal production capacity; the key is the actual utilization rate of the production lines and scheduling flexibility.

In practice, three questions need to be clarified:

1. What is the factory's monthly production capacity? Not the "theoretical maximum capacity," but the "available capacity after deducting existing orders." Some factories have a lot of equipment, but their orders are fully booked, and your order will have to wait 3-4 months. Some factories have fewer production lines but flexible scheduling, and new orders can go online in 2-3 weeks.

2. Can they do "small-batch rapid response"? Many brand owners' first orders are not large (hundreds to thousands of units), but they require fast delivery (3-4 weeks). If the factory's minimum production run is 100,000 units, your small order simply cannot be scheduled. When looking for a factory, be sure to ask clearly about the "minimum production run" and "shortest delivery cycle."

3. Do they have emergency capacity expansion capability? If your product suddenly takes off and you need to temporarily increase volume, can the factory double its capacity within 2-3 weeks? This capability depends on whether the factory has "flexible production lines" or "collaborative factories" that can be deployed.

Weitai Group's four major factories cover a total area of over 150,000 square meters, with monthly capacity covering 1 million facial masks, 500,000 bottles of essence, and over 300,000 pairs of lyophilized powder. In terms of scheduling, the delivery cycle for regular orders is 15-25 days, and rush orders can be compressed to 7-10 days. Whether brand owners are testing the waters with small batches or scaling up to large volumes, we can match.

Threshold 3: Formulation and R&D Capability—Look at the "Mature Formulation Library," Not the "R&D Team Headcount"

When choosing an OEM factory, brand owners have another common misconception: over-focusing on "how many people are in the R&D team" while ignoring "how many mature formulations the factory has that can be used directly."

The actual situation is that most brand owners looking for OEM factories do not need to develop formulations from scratch—what they need is fine-tuning based on mature formulations. For example, adding a specific active ingredient, adjusting skin feel, or changing the fragrance—for these tasks, a factory with a library of 2,000+ mature formulations is 100 times more efficient than a factory with 10 PhDs but an empty formulation library.

When examining a factory's formulation capability, brand owners should focus on:

• Number of mature formulations: A factory with fewer than 500 formulations offers too narrow a choice.
• Whether formulations have "mass production validation": Lab formulations and mass production formulations are two different things. Some formulations work perfectly in a beaker but run into problems when scaled up to a 1-ton reactor. The value of a mature formulation lies in "having been proven to be stably mass-producible."
• Whether formulations cover your target category: You want to make recombinant collagen dressings, but the factory's formulation library is all hyaluronic acid masks—mismatch.

Weitai Group currently has accumulated a mature formulation library + mature formulations, covering medical dressings, essence, facial masks, lyophilized powder, sprays, and other full categories, including over 20 types of recombinant collagen formulations. Brand owners can come and directly select formulations, request samples, and confirm—formulation development is not charged separately (included in the OEM fee), and the sampling cycle is 1-2 weeks.

Threshold 4: Registration and Filing Experience—This Is the Most Easily Overlooked "Invisible Threshold"

Registration and filing of medical device-grade products is a technical task involving product design, technical requirement writing, registration testing, clinical evaluation (if applicable), registration dossier preparation, and other steps. If the factory does not have rich registration and filing experience, the brand owner will have to find a consulting company to do it themselves, which costs over 100,000 yuan and takes an extra six months.

To judge a factory's registration and filing capability, look at two indicators:

1. How many registration certificates the factory itself holds. A factory that holds 50+ Class II medical device registration certificates itself is very likely to have no problem with registration and filing capability—because these certificates were all obtained through real work. A factory with only three to five certificates of its own will very likely run into various pitfalls when helping you with registration and filing.

2. How many products the factory has successfully filed for brand owners. Holding certificates oneself and filing for others are two different experiences. Some factories have many certificates of their own but are very inefficient when filing for brand owners—because they do not understand the brand owner's needs, and communication costs are high. The best factory is one that is rich in both "its own certificates" and "experience filing for clients."

Weitai Group has over 110 Class II medical device registrations and filings, with both independent filing experience and abundant cases of filing on behalf of brand owners. We intervene in registration planning from the product design stage, helping brand owners consider the registration and filing path when the formulation is finalized, avoiding the awkwardness of "discovering only after completion that the registration path is unworkable."

Threshold 5: Quality Control System—Look at "Process Control," Not "Final Inspection"

Finally, quality. Many brand owners think "quality" means "just inspect the finished product and it's qualified"—this thinking is completely wrong.

Quality control for medical devices emphasizes "full-process control"—from incoming material inspection (IQC), production process control (IPQC), to finished product release inspection (OQC), every step must have standards, records, and traceability.

When examining a factory's quality system, brand owners should focus on:

• Material control: Are there supplier audits for raw materials? Is there an incoming inspection report for each batch of raw materials? Are there activity tests for key raw materials (such as recombinant collagen raw materials)?
• Process control: Is the production workshop Class 10,000 clean? Is there online environmental monitoring (temperature and humidity, particle count, microbial settling bacteria)? Are there process records for key processes (such as filling and sterilization)?
• Finished product control: Do release inspection items cover all indicators in the product technical requirements? Is there a retention sample system? Is the retention sample storage period reasonable?

All four of Weitai Group's factories are equipped with Class 10,000 clean workshops, online environmental monitoring systems running 24 hours, and full traceable records for key processes. Regarding raw materials, our recombinant collagen raw materials undergo activity testing and three-dimensional characterization (molecular weight, isoelectric point, hydroxyproline content) for each batch to ensure stable raw material quality. Regarding finished products, each batch must pass full-item inspection before release, and retention samples are kept until 12 months after the expiration date.

Final Words

Choosing an OEM factory is essentially choosing a "partner," not choosing the "cheapest supplier." Medical device-grade medical dressings have high compliance thresholds, long registration cycles, and strict quality requirements. Finding a reliable and stable partner is much more worry-free and much safer than frequently changing factories.

If brand owners have factory selection needs, they can evaluate against the above 5 thresholds one by one. Of course, you are also welcome to visit Weitai Group directly—15 years of OEM experience, over 110 Class II medical device registrations and filings, a mature formulation library + mature formulations, and four major factories with 100,000㎡ of production capacity. These numbers are not boasts; they were built order by order.

If you have OEM/ODM production needs, welcome to inquire for more information.