Materia Hnos.

Beijing Padiwei Company is a professional enterprise engaged in the research and development, production, manufacturing, sales and service of mechanical, optical and electrical integration. The company adheres to the principle of "honesty as the foun

Sichuan Shifang Jinda Chemical Co., Ltd. is a professional manufacturer of phosphorus chemical products located in Sichuan Province, China. Located in a location with abundant resources and convenient transportation, adjacent to the Chengdu Mianyang