Sino-Environment Technology Group Limited is an investment holding company. The Company operates under four segments: industrial waste gas treatment, management and recovery of volatile organic compounds (VOC), in particular toluene, industrial and municipal waste water treatment and management, dust elimination and industrial waste gas treatment and management of sulphur dioxide and oxidized forms of nitrogen. The Company designs, fabricates, installs and commissions its VOC Automatic Recycling Device. It undertakes the design, assembly, installation, testing and commissioning of various equipment relating to industrial waste water treatment. It manufactures and installs industrial dust-elimination facilities for independent power plants and heavy industries like steel mills. Its subsidiaries include Sino-Environment Clean Power Technology Pte. Ltd., Fujian Thumb Environmental Facilities Co., Ltd., Thumb Env-Tech Group (Fujian) Co., Ltd. and Fujian Weidong EPT Co., Ltd.