Grey Trading Co. Ltd. was established in 2007. It is located in Fengqiu, Henan Province where Zhao Kuang and Xu Huangpao have abundant cultural heritage. It is a high-tech enterprise integrating independent research, production marketing and service. The quality and reputation of products have been highly praised by medical units and medical, pharmaceutical agricultural, forestry animal husbandry, normal universities and scientific research institutions throughout the country.br