The registration address of beijing-first-class research in environmental science and technology is located on the 6th floor of building 4 of tianhua street, 9th street, beijing-based city. The registration authority is the market supervision authority of beijing-based dinhing district, with legal representatives and operates on general projects: technical services, technology development, technical advice, technology exchange, technology transfer, technology diffusion; new materials technology development; new materials technology extension services; electronic-specific materials development; chemical product sales (excluding licensed chemical products); marketing of new metal functions; specialized chemical product sales (excluding hazardous chemicals); production of eco-environmental materials; environmental protection monitoring; building cleaning services; fire containment material sales; fire containment material production; paint sales (without dangerous chemicals); paint manufacture (without dangerous chemicals); surface functional material sales; specialized chemical product manufacture (without dangerous chemicals); professional cleaning, cleaning and disinfection services; and the sale of heat and soundproof materials (in addition to legally authorized projects, operating autonomously on the basis of a trade licence) (no national and municipal industrial policy prohibitions and restrictions)