Xiamen Topusing Chemical Co., Ltd. is a professional agrochemicals company which is focus on agricultural chemicals research, production and export especially on special fertilizer formulas. From the year 1998 Topusing Chem. Makes all their efforts in supplying the plants every kind of fertilizers for most crops stage. Base on three production bases in Fujian, Sichuan and Taiwan, strict quality control and sincere services, our products have been exporting to more than 80 countries. We also offer OEM service or use our technical expertise to design and produce a fertilizer to suit your exact needs. To guarantee all products and services, Topusing has been certified by ISO9001: 2008, CQC. etc.