Manufacturing of sealants; manufacturing of sealing fillers; sales of sealing fillers; sales of high-performance sealing materials; manufacturing of synthetic materials (excluding hazardous chemicals); sales of synthetic materials; manufacturing of plastic products; sales of plastic products; import and export of goods; import and export of technologies; import and export agency; technical services, technical development, technical consulting, technical exchange, technology transfer, and technology promotion; road cargo transport of general goods with a total mass of 4.5 tons or less (excluding online freight and dangerous goods).