Customs clearance knowledge training is open on Yuanfar companyOn the afternoon of June 9th, the risk Control Department of Yuanfar Company invited Yang Ling, general manager of Shaanxi Yinghe Group Company.
Polymorphism Hydrazine has toxicology 1. Acute toxicity: MEDIAN lethal dose (rabbit, vein) 25mg/kg, highly toxic, strongly erodes skin and impedes enzymes in the body. Acute poisoning can damage the central nervous system and, in most cases, lead to death. It mainly affects the metabolism of carb