Shanghai Tongwei Co. Ltd is a company mainly in development of agricultural biotechnology, focus on developing production of various humic acid,amino acid,fulvic acid,gibberellic acid,salicylic acid,complex sodium nitrate,DA-,gibberellin etc. protopowder and biochemical preparation,also focus on developing production of various foliar fertilizer,flushing fertilizer,drip irrigation fertilizer,water culture solution etc. series products. Meanwhile, the company also manufacture and operate aquiculture and biofodder additive,fertilizer synergist,organic fermentation fugus agent,soil conditioner,nursling and flower fertilizer,biochemical organic fertilizer etc. multiple agricultural chemical products.