May of 2000, Puyang Greenoil Petroleum Engineering Technology Co Ltd established

May of 2001, Greenoil Petroleum Technology Servicing Co Ltd established

October of 2014, New R&D Center and Production facility Launched in Puyang, and, Greenoil awarded as New & High-tech enterprise in Beijing

December of 2015, Greenoil stocks officially launched and traded in the National Equities Exchange and Quotations

May of 2016, Henan Greenoil Environmental Technology Co Ltd established

December of 2016, Puyang Greenoil awarded as New & High-tech enterprise in Henan