Hai Yang Zhang

Shandong Efirm Biochemistry & Environmental Protection Co., Ltd. engages in the development of sulfide industry chain. The company's products cover three major business segments, that is, high-end sulfur-containing new materials, featured sulfur-containing chemicals and high-efficient environmental-friendly additives. Its products mainly used in medical care, agriculture, engineering materials, optical lenses, precision electronics, and petroleum refining industry. The company was founded on January 24, 2011 and is headquartered in Boxing, China.