All valve products must undergo rigorous leak prevention testing before they are packaged and shipped. Before the products are shipped, the quality inspector will conduct a 100% product leak test. Our company has learned from many lessons and experiences where valve leakage problems have led to returns or compensation claims. As a result, the company has spent a lot of time and money on research and reform in terms of quality. In recent years, we have received almost no complaints from customers regarding product quality. If we find two or more leakage problems in a batch of products, our quality inspection department will require all products to undergo outgoing inspection.