Yes According to the inquiry, Guizhou Lin Kai Fertilizer Co., Ltd. is a wholly-owned subsidiary of Lin Kai Group. Authorized by Guizhou Lin Kai (Group) Co., Ltd., it is responsible for the sales of products of subsidiaries and subsidiaries of Lin Kai Group. So diammonium phosphate in Guizhou is genuine. Diamine is a binary compound fertilizer with low nitrogen and high phosphorus. Phosphorus-deficient soil, no matter what crops are planted, can increase production in the first year.