We have a professional quality control team, they use our perfect quality control system to study and analyze the distribution of the quality data of our auto parts replacement, which is reveals the law of quality differences. They figure out the reasons that affect the quality differences and take technical organization measures to liminate or control the factors causing defective or unqualified spare parts, so that every link in the whole production process can be carried out normally. To achieve applicability, reliability and economy, so as to meet customer and market demand better.