Penshibao Company is committed to the research, development and production of Penshibao BRAND Water soluble organic fertilizer, with independent intellectual property rights and national technology patents, and the products have obvious effects of increasing production and income, improving quality, improving resistance, degrading pesticide residues, reducing the use of chemical fertilizers, and repairing and improving soil shown by the experimental research of research institutions including National Agricultural Technology Extension Service Center of the Ministry of Agriculture and Rural Affairs of China, Cultivated Land Quality Monitoring and Protection Center, China Agricultural University, Huazhong Agricultural University, Hunan Agricultural University and Fujian Agriculture and Forestry University, and the products also can provide a strong guarantee for promoting the development of selenium-rich healthy agriculture.