Zhejiang Tonglu Huifeng Biosciences

Zhejiang Tonglu Huifeng Biosciences is a China-based biochemical and biopesticide manufacturer headquartered in Tonglu, Hangzhou, Zhejiang. The company is best known as an early and large domestic producer of validamycin in China and also manufactures abamectin, Bacillus thuringiensis products, and related pesticide formulations. Its business appears centered on industrial microbiological fermentation, production, and export of agricultural biochemical products rather than human therapeutics. Although some directories mention activity in bio-pharmaceutical fields, the available evidence points primarily to a commercial agrochemical and biopesticide business with manufacturing and R&D capabilities. The company exports to multiple countries and operates production assets and affiliated factories in China.