Henan Doing Environmental Protection Technology Co., Ltd. as one of subsidiary companies of Doing Holdings Co., Ltd. is a comprehensive environmental equipment manufacturing enterprise, integrating process design, technology research and development, manufacturing, sales and after-sales service.

The company's main business ranges: Solid waste and hazardous waste treatment equipment, including waste tire/plastic/rubber/oil sludge pyrolysis plant, waste oil distillation plant and related environmental protection equipment.