In order to better highlight the company's operating conditions, display the overall strength of the company, by our application, Alibaba International station commissioned a third-party certification party---Germany TUV certification testing (China) Co., Ltd. (TXB Rheinland Testing services Corp. Limited), To our field certification, audit content including the company's plant conditions, product conditions, production equipment, research and development capabilities, production capacity, quality control, foreign trade capabilities, testing personnel conducted a rigorous and meticulous audit, and taken the relevant video. After review and assessment, our indicators data are in line with the relevant standards, passed the approval of the Alibaba Supplier Assessment certification.