Nanomaterial research, development, manufacturing, and sales; new material technology research and development, and promotional services; sales of doors and windows, curtain walls, decorative construction materials, sealing materials, and building materials; production and sales of sealants, filling adhesives, and all-purpose adhesives (limited to adhesive projects in the "名录 of Classification and Management of Environmental Impact Assessment of Construction Projects" with evaluation categories of report form or registration form).