Which brand of chemical fertilizer is suitable for apple trees in Guanzhong area of Shaanxi Province?

The riverbank is injected with fertilizer. The apple trees in Guanzhong area of Shaanxi Province are suitable for application of grain fertilizer. Shaanxi, referred to as "Shaanxi" or "Qin" for short, is a provincial administrative region of People's Republic of China (PRC), with an as its capital and located in the hinterland of China. Hedi injection fertilizer is an honorary product of Shaanxi Hedi Agrochemical Co., Ltd., which is suitable for apple trees in Guanzhong area of Shaanxi Province.