Dongxin Instrument Service Co., Ltd.   

Topsun is a professional production and service company specializing in textile, printing and dyeing, clothing, toys, leather, paper, hardware, agricultural horticulture and other laboratory testing instruments. It has many years of experience in quality testing solutions. Topsun has worked with several international standards organizations and Daiei Kagaku (Lenzing instruments, VeriVide, roaches, q-panel, etc.) to provide all kinds of one-stop services for laboratories, such as instruments and consumables, which meet domestic and international test standards. Over the years, the company has a good reputation, excellent quality, timely and fast.