We have a scientific quality management system internally, which defines the guideline and protocols of our quality assurance management. We pay strict attention to controlling the quality from the first step of product development, to materials control and processing control and to final inspection. We also conduct predictive problem assessment and potentially destructive product testing during sample development. PP meeting before mass production is essential to integrate all departments to make sure every detailed process and risk is considered. IQC, IPQC, FQC helps to control the quality during each production procedure. In-house QC spot-checking report to customers after the goods are ready and in the English version. The 3rd party test according to customer's demands. We take "quality is life" as our production standard and “customer satisfaction” as our goal.