The registration address of kunsan city's tsumi-technology and technology ltd is located in building no. 8 of lukshan city, rufusy road, no. 88, with registration as the administrative approval authority of kunshan city, with legal representatives chen jianxi, and covers general projects: environmental advisory services; technical extension services; technical services; technical services; technical advice, technical exchange, technology transfer, technology extension; technical advice on resource recycling services; water pollution management; sale of specialized equipment for environmental protection; sale of specialized chemical products (without dangerous chemicals); sale of water pollution monitoring and detection instruments; development of technology for non-conventional water sources; water pollution prevention and treatment services; sale of machinery equipment; distribution of spare parts for vehicles; sale of car decorations; retail distribution of hardware products; information advisory services (without licensing); sale of industrial automated control system devices; installation of general mechanical equipment; retailing of electronicware; development of mechanical equipment; maintenance of electronic, mechanical equipment (without special equipment) (in addition to legally authorized projects, autonomous operation under a licence)