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 Location：Home page > Background |
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Mr. Changshu Zhang (Senior engineer), the general manager of Tongwei Co. Ltd, started his microbe application research in last century 60th. He studied well in gibberellin、azotobacteria、green worm bacteria、actinomycete、high temperature zymogenic bacteria etc. In 70th he began to comprehensively research the humic acid application development in agriculture、animal husbandry、medicne、bore-hole、ceram and water process etc.，so that he has got more than 20 awards of science and technology achievement including 3 national new product Golden Dragon Awards. In 80th he founded the first humic acid industrial company with a research institute, conducted comprehensive developing research in fulvic acid 、 biochemical fulvic acid 、 humic acid sulfonation 、 nitrification modified and various kind of humic acid industrial preparation ， so gained multiple science and technology achievement. In 90 th he conducted multiple application development in biofertilizer 、 biofodder 、 biochemical fulvic acid 、 plant nutrient solution 、 amino acid foliar fertilizer 、 flushing fertilizer ， biochemical humic acid active foliar fertilizer etc. ， from the endeavour he won 6 awards of Shanghai municipal science and technology achievement ， including 3 Shanghai high-new-tech achievement transfer projects. Mr. Changshu Zhang has now become celebrity and expert figure in the line of humic acid in China ， his outstanding achievements have been taken into Chese Management Expert Talent Database.
Tongwei Co. Ltd now mainly acts on the development research in humic acid 、 amino acid 、 gibberellic acid 、 complex sodium nitrate etc. Meanwhile the company provides various fertilizer 、 fodder 、 synergist and bioactive additive entire country-oriented ， and supplies big package product (that can be disassemble and rapack into smaller ones) for the manufacturer of foliar fertilizer 、 liquid fertilizer with technical services. Welcome conditioned company to market or dispense Shanghai “ Generous More Harvest” foliar fertilizer and related series products on a commission basis . If you need any detailed description materials and samples ， please contact Miss Li Zhang of the Tongwei Co. Ltd
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