Pipe technology research and development, technical services; steel-plastic composite pipes, coated steel pipes, hot-dipped galvanized steel pipes. High-density polyethylene water supply pipes, polyvinyl chloride water supply pipes, high-voltage cable protection plastic pipes, agricultural irrigation pipes and accessories, modified polypropylene cable protection pipes, power conduits, steel strip pipes, corrugated pipes, radiant heating pipes, fiber optic pipes, grating pipes, irrigation equipment research, production, and sales; import and export of goods or technology (excluding goods or technology import and export prohibited by the state or involving administrative approval). (If the company needs to operate according to relevant provisions, please refer to the relevant provisions of the company's business scope.)