JIANGSU ZHONGYE CHEMICAL CO., LTD is one of the biggest producers for Chlorpyrifos and it intermediate materials in china. The company involved the whole production process for Chlorpyrifos, from Trichloroacetyl chloride¡ú3,5,6-Trichloropyridin-2-ol sodium, and O, O Diethylthiophosphoryl Chloride to final Chlorpyrifos.For we used don't have registration Lience in china market, so we only doing thes business secretly through some agents, now we have get the lience, start doing the business ourselves.