PHNOM PENH, May 4, 2016 (Xinhua) -- Hann Khieng (R, front), managing director of Cambodian Petrochemical Company, shakes hands with Zhang Jun (L, front), chairman of China Huanqiu Contracting and Engineering Corp, in Phnom Penh, Cambodia, May 4, ......

　　An npk fertilizer is usually thought of as a chemical fertilizer, but npk applies to any soil amendment that supplies Nitrogen, Phosphorous, and K, Potassium, including organic fertilizers....

　　Complete fertilizers (also known as "balanced fertilizers" or simply "NPK fertilizers") are so called because they contain nitrogen, phosphorus, and potassium -- the Big 3 in fertilizer ingredients. A fertilizer listed as "10-10...

　　Henan Leef Fertilizer Co,.Ltd. attends Fertilizer Zone of 18th China International Agrochemical & Crop Protection Exhibition in Shanghai New International Expo Center during 1-3 Mar, 2017....