Quality control is a priority in the chemical industry, ensuring that products are made according to the right formulas and ensuring the technical performances meet the requirements. Changyi chemical is committed to being the preferred source in providing products and services of high quality and great value to customers. To achieve this vision, the Quality Control Department maintains quality measuring instruments that are calibrated regularly and verified in time. Every material is inspected during production and before delivery. Our quality control team continues to maintain a low return rate on the products and is committed to excellence. And Every employee at Changyi chemical is dedicated to following established procedures and delivering products and services that are excellent.