The registration address of china-singwon (hebei) environmental science and technology ltd. Is located in grand guangan village, grand township county; the registration authority is the superintendency of the markets administration of hong kong city, with legal representation from li bixia and covers general projects: technical services, technology development, technical advice, technology exchange, technology transfer, technology promotion; extension of new materials; production of eco-environmental materials; marketing of ecological materials; manufacture of paints (without hazardous chemicals); marketing of paints (without dangerous chemicals); sale of paints (without hazardous chemicals); manufacture of insulation and soundproof materials; sale of heat and soundproof materials; production of fire resistant materials; production of fireproof materials; sale of fireproof materials; manufacture of synthetic materials (excluding dangerous chemicals); sale of synthetic materials; sale of new membranes; sale of chemical products (without licensed chemical products); sale of mechanical equipment; professional cleaning, cleaning and disinfecting services; atmospheric pollution management; sealing; sale of seals; cleaning of buildings; and chemical cleaning of boilers (in addition to legally authorized projects, operating under a licence)