50, the algorithm is: (27+73)/2=50
Checking: 50-27=23; 50+23=73
Verification is correct
China's top ten fertilizer brands - wholesale manufacturer contact number
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Chongqing Barometer is a comprehensive service provider for agricultural cultivation, with direct factory contacts. Wholesale sales and pricing available nationwide. Post, focusing on agricultural technical services, pursuing the production of high-quality fertilizer products, with a variety of products such as compound fertilizers/water-soluble fertilizers/organic fertilizers/microbial fertilizers >Chongqing Barometer Industrial Co., Ltd. Advertisement
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The prerequisite is that the company has a corresponding fertilizer registration certificate and a statutory test report from a provincial or higher institution.
1. According to the information request of the "Notice of Exemption from Value Added Tax on Organic Fertilizer Products", taxpayers produce, sell, wholesale and retail "organic fertilizers", “water-soluble organic fertilizers”. " and "bioorganic fertilizers" The products are exempt from value added tax. The prerequisite for tax exemption for these types of fertilizers is that the company has a corresponding fertilizer registration certificate and a legal test report from a provincial or higher institution
2.osoluble refers to compound fertilizers containing nitrogen, phosphorus, potassium, calcium, magnesium, trace elements, amino acids, humic acid, alginic acid, etc. which can be completely dissolved in water. From the point of view of form, there are two types of water-soluble solid fertilizer and water-soluble liquid fertilizer. According to the nutrient content, they can be divided into large element water-soluble fertilizers, medium element water-soluble fertilizers and trace elements. water-soluble fertilizers, water-soluble fertilizers containing amino acids, water-soluble fertilizers containing humic acid and water-soluble organic fertilizers.