... . ISO:9001-2008 1. NPK: Shindoo produce all kinds of compound fertilizer. Total output is 1,630,000 metric tons per ... kinds of products.2. Shindoo is the only full-line compound fertilizer supplier in China, and it is the largest manufacturer ... %16-16-1645%15-15-1551%15-15-15 NPK Compound Fertilizer by Tower Granulation