Zhejiang Chengxin Pharma & Chem. is a professional R & D enterprise of medicine, chemical and petrochemical equipment with D1, D2 class Ⅰ and Ⅱ pressure vessel design, A2 class Ⅲ pressure vessel manufacturing and GC2 pipeline installation equipment qualification. It is a Chinese pharmaceutical equipment. Association member units, national high-tech recognized enterprises, Sinopec main mining suppl...