The registered address of sun tung tung seng co. Ltd. Is located on the northern edge of the river and south side of the yangzhou city street office in yanzhou city, shandong province. The registered authority is the city market supervision authority of guozhou. The legal person's representative is zhao kaiyan and is operating on general items: manufacture of specialized equipment for plastic processing; sale of specialized equipment for plastic processing; manufacture of specialized equipment (other than licensed specialized equipment); manufacture of generic equipment (other than special equipment manufacture); manufacture of general parts and components; sale of mechanical equipment; manufacture of mechanical parts and components; sale of mechanical parts; manufacture of specialized equipment for environmental protection; sale of specialized equipment for environmental protection; manufacture of plastics; manufacture of bio-based materials; sale of biological materials; manufacture of metal structures; sale of metal structures; manufacture of moulds; sale of moulds; sale of special equipment; retailing of electronicware; retailing of hardware; retailing of hardware; sale of synthetic materials; processing of plastic surfaces; packaging services; installation of general mechanical equipment; technical services, technical, technical, technical exchange, technology, technology, technology transfer, technology, extension, import and export licensed projects (in addition to those subject to legal authorization, operating autonomously on the basis of a business licence): special equipment manufacturing. (a project subject to legal approval may only be carried out with the approval of the relevant department, subject to the approval documents or licences of the relevant department)