Hangzhou GengYang chemical materials co., LTD is a professional supplier in chemical products development, production, sales for the integration of high-tech enterprises from 2010. The company's products are widely used in plastics, food, cosmetics and medicine and other fields.Our company insist on the market is the most important, we always have a good cooperation with all of our customers...we following the policy of"enterprising truth-seeking rigorous unity" forever, and consta...