国产亚洲欧洲精品,亚洲aⅴ男人的天堂在线观看,激情综合网婷婷,青草影院天堂男人久久,野外性战欧美,欧美成电影综合网站色www,成人一级黄色大片

Nantong Wantong Steel Pipe Co., Ltd. is located in the Hai'an Economic Development Zone, Jiangsu Province, covering an area of 68 acres with assets of 200 million yuan and an annual comprehensive production capacity of 300,000 tons. It is a comprehensive enterprise integrating development, production, trade, and service. Since its establishment, the company has developed into a comprehensive production enterprise specializing in the production of high-frequency welded pipes, steel-plastic composite pipes, hot-dip galvanized pipes, steel sections, steel mesh, various specifications of scaffolding, hanging baskets, and agricultural greenhouse series products, thanks to the continuous pioneering spirit, pragmatic innovation, and honest operation of all employees. The company always adheres to the principle of technology as the guide, market as the basis, and innovation for development. So far, the company has obtained multiple national patents. Among them, the green and environmentally friendly pipe material - steel-plastic composite pipe has obtained a national patent; the scaffolding produced has been recognized as "High-quality Product of Jiangsu Province" and is a key protection unit of intellectual property rights in Jiangsu Province. Jiangsu TV station has made a special report on this...