1. We evaluate our suppliers' production capacity, quality control measures, and commitment to the environment and safety;
2. Sign a definite purchase contract with the supplier, and we will clarify the quality requirements and supply standards of raw materials;
3. Before purchasing raw materials, we will test incoming samples to verify the quality of raw materials through laboratory testing and analysis. Only the raw materials that have passed the test will be formally purchased and used.
Only vetted and selected suppliers can become our partners.

At the same time, we have established a quality recording system, recording the production process and quality data of each product. Each product has a unique batch number tracking barcode identification to facilitate quality tracking and tracing. Whether in the production process or the after-sales service, through these recording and tracking measures, we can quickly and accurately find the production history and quality data of the product, to help customers solve problems and provide targeted support.

We have the advanced and complete testing equipment in the industry, such as APC particle tester, electronic Libra, thickness tester, surface electronic tester, static voltage tester, tensile tester, respiratory resistance tester, mask filtration efficiency tester, etc. With this testing equipment, we can ensure that the finished parts we provide to our customers are of the right quality and meet the standards.