China thus chemical products import & export corporation was approved by ministry of foreign trade & economic co - operation and ratified by national bureau of industry & commerce to register to be a limited company 中土畜三利林化产品有限公司的前身是中土畜林化产品进出口公司,经对外贸易经济合作部批准,国家工商局核准,于2001年1月20日改制注册为有限公司。