OEM collaboration for beverage test strips often begins with a small strip design, yet it culminates in a complete packaging workflow. Many brand owners initially perceive customization as merely an appearance-level change, but in reality, the true OEM process is far more meticulous than imagined and requires repeated coordination between both parties.
The first step is requirement confirmation and strip design. The strip here is not simply a printed logo; it refers to the physicochemical structure of the test strip, including the reaction membrane layer, the absorbent pad, the supporting card, and the window position on the cover film. During the design phase, the test items, sensitivity requirements, and application scenarios must be clarified. For example, rapid comparison used in tea shops and precise semi-quantitative analysis used in laboratories have notable differences in material selection and structure. The factory will provide feasible solutions based on these needs and produce a small number of hand-assembled samples for testing.
Once the sample performance is confirmed, the process moves to pilot production. Cutting precision and spotting volume control are the keys at this stage. Slight deviations in cutting dimensions can affect the fit during later cartridge assembly, while uneven spotting volume directly impacts the color consistency of the test line. A mature production line typically employs online visual inspection to remove semi-finished products with appearance defects or positional offsets.
Next come assembly and drying treatment. Snapping the test strip into the plastic cartridge, placing the desiccant, and sealing the aluminum pouch all must be carried out in a humidity-controlled environment. Because the core components of the test strip are sensitive to moisture, any excess moisture introduced during packaging can lead to decreased sensitivity during the shelf life, even if early performance is stable. This is why OEM factories strictly monitor the relative humidity of the packaging workshop and regularly sample-test the seal integrity of finished products.
Finally comes the packaging process most familiar to brand owners: folding instructions into the box, applying labels, batch coding, shrink-wrapping or heat-sealing, and boxing according to standard procedures. This stage also requires systematic management to ensure complete traceability information for each batch. When boxes of test strips bearing the customer's brand roll off the production line, they represent the coordinated result of design, production, quality control, and packaging. For brand owners, understanding these processes is not about intervening in every detail, but about communicating needs more accurately with the factory, so that the final product not only meets detection functions but also conveys the brand's professional image.