What environmental protection enterprises are there in China?

Shenzhen sustainable environmental technology. Shenzhen Helong Environmental Technology focuses on the research and development, production, sales and operation of urban and rural environmental treatment equipment (solid waste and sewage). Its main products include integrated sewage treatment equipment, urban waste gas-carbon complementary combustion treatment system and urban waste green energy station. Focus on the research and development, production, sales and operation of urban and rural environmental treatment equipment (solid waste and sewage). The main products include integrated sewage treatment equipment, urban waste gas carbon complementary combustion treatment system and urban waste green energy station.