Profile: Hangzhou Zhengchu Trade Co., Ltd. is a provider of chemical and quantize products. Our chemical products include H-imidazo[1,2-a]pyridine, isoquinoline, benzene-pyridine-1h-pyrazole, pyrimidine-pyridazine-pyrazine, thiazole-benzothiazole-1h-indazole, 2,3-dihy-droinden-1-one and heterocyclic-ring. We provide quantize products such as 3,4,5,6-tetrafluorophthalic anhydride, 2-methyl piperazine and 3,4,5,6-tetrafluorophthalic acid.