What is the quality of compound fertilizer in Jin Zhengda?

According to the information of Oriental Gold Fund, Jin Zhengda Ecological Engineering Group Co., Ltd. was established in 1998. It is a national key high-tech enterprise, a national innovative enterprise and a global large-scale slow-release fertilizer production base engaged in research and development, production and sales of new fertilizers such as compound fertilizer, slow-release fertilizer and water-soluble fertilizer. Jin Zhengda has developed into the world's largest producer of slow-release fertilizers and the largest new fertilizer enterprise in China. Won 2 national science and technology progress awards and 3 provincial and ministerial science and technology progress awards.