How to choose a water milk set OEM factory for a brand: key points for investigation and cooperation process

For cosmetic brands, choosing a suitable OEM factory is a crucial step in moving products from concept to physical form. As a basic skincare category, the water-based milk set has relatively mature craftsmanship, but precisely because of this, it tests the factory's attention to detail and coordination. The following provides a practical reference guide for brand owners from three dimensions: factory capability assessment, cooperation conditions, and processes.

1、 Three key points for assessing factory capabilities

1. Conduct on-site visits to observe the management order of the production site

The factory workshop is a direct reflection of production capacity. It is recommended that the brand arrange temporary visits without prior notice, focusing on observing whether the labeling and circulation of raw material storage areas are clear and orderly, the cleanliness and personnel operation standards of the production workshop, the status of products on the filling line, and the frequency of quality inspection personnel on duty. A well managed factory should present its floors, equipment, and record forms in a neat and organized manner. If conditions permit, one can view the product lines of their partner brands to gain a glimpse into their production experience and bulk delivery capabilities.

2. Check qualification documents and quality control records

The factory is required to show the cosmetics production license (pay attention to whether the licensed items include "general liquid unit" and "cream lotion unit"), ISO 22716 and other system certifications. More importantly, please ask the other party to provide type inspection reports, factory inspection records, and management records of product sample rooms for similar products in the past year. The quality stability can be determined through consecutive batches of inspection data. In addition, inquire whether the factory has basic internal control capabilities such as anti-corrosion challenge testing and microbiological testing, which are related to the safety of product shelf life.

3. Communicate R&D cooperation and sampling efficiency

The response speed of the factory's R&D team is crucial when providing proprietary formulas or commissioning the development of formulas. You can first propose a water emulsion sampling requirement and observe the cycle from formula communication, raw material screening to providing samples. During the sampling process, pay attention to whether the other party actively explains the functions of each raw material in the formula, the recommended pH range, and viscosity indicators, rather than relying solely on experience. A factory with the ability to adjust formulas will proactively provide suggestions for improving body and skin feel based on brand positioning (such as refreshing or moisturizing), which reflects its technological accumulation.

2、 Cooperation conditions and business terms

After determining the intended factory, the following cooperation conditions need to be clarified:

Minimum Order Quantity (MOQ): Due to the involvement of multiple purchases of bottle containers, outer boxes, and material bodies, the MOQ for water milk sets is usually higher than that for individual items. It is necessary to confirm whether the water and milk in the set are required to be produced in the same batch, and the minimum order quantity for purchasing the bottle separately.

Cost composition: Clear breakdown of processing fees (including filling and packaging labor), raw material costs, bottle procurement costs, and third-party testing fees. Clarify whether the sampling fee will be deducted in subsequent bulk shipments, as well as the party responsible for bearing marginal costs such as sample transportation and storage.

Payment terms and payment methods: The usual practice is to prepay 30% -50% of the deposit and settle the final payment before shipment. If the brand has a demand for payment terms, it is necessary to communicate in advance, and the factory will adjust the processing unit price accordingly.

Confidentiality Agreement and Exclusive Clause: Signing a confidentiality agreement is a necessary step, especially when it comes to brand exclusive formulas. At the same time, confirm whether the factory will accept orders from competitors of the same type during the cooperation period to avoid the risk of formula leakage.

3、 Step by step explanation of cooperation process

The standard collaboration process generally consists of eight stages:

Requirement communication: The brand provides product formulation, fragrance preference, packaging specifications, and target cost range.

Formula sampling: The factory produces 2-3 versions of samples according to the requirements and recommends bottle adapters accordingly.

Sample confirmation: The brand will conduct internal skin sensation testing and small-scale trials, and provide feedback on adjustments.

Contract signing: Determine the final formula, price, delivery time, sign the processing contract and quality agreement.

Bottle procurement and material preparation: Confirm the bottle mold (if any) and packaging material color samples, and the factory will purchase raw materials synchronously.

Trial production (small batch): Before the formal mass production, it is recommended to conduct 50-100 sets of trial production to inspect the compatibility between the filling line and packaging.

Large scale production and inspection: The factory provides a production schedule, and the brand can stay at the factory to follow the production line or arrange spot checks at key nodes (such as before filling and after packaging).

Shipment and delivery: Verify the quantity, batch number, and third-party testing report, and arrange for logistics to be sent to the designated warehouse of the brand.

The entire cycle from sampling to delivery usually takes 45 to 60 working days. The brand should reserve sufficient time and keep written confirmation records at each node to avoid subsequent disputes.

Choosing a contract manufacturer is not a simple procurement act, but a search for long-term partners for collaboration. Brand owners should maintain rational judgment during inspections, pay attention to the actual execution details of the factory rather than verbal promises, and clarify their own positioning and budget scope in order to make decisions that meet the needs of business development.