Entering Yisu Technology, the pioneer of Sponge city construction, has been engaged in the injection molding industry for ten years and actively implements the call of the national Sponge city strategic construction. According to the Technical Guide for Sponge city Construction, through innovation, we have successfully developed a series of supporting products for Sponge city construction integrating rainwater regulation and storage, water-saving and rainwater purification; Adhere to the system design concept of landscape as the carrier and water ecological infrastructure as the support, to make the urban land breathe and have elasticity like a sponge. For a long time, it has provided Sponge city with all required indicator products, and its cooperation over the years has been recognized by major Sponge city in the mainland. Our products are widely used in rainwater drainage of Sponge city construction projects, rainwater drainage of urban rail transit construction projects, pipeline laying of underground pipeline projects, rainwater and sewage drainage of chemical plants and other engineering construction fields with high requirements for corrosion resistance. Our products are exported to multiple countries and regions such as Southeast Asia, Europe, and Africa, including both domestically and internationally. In recent years, through continuous innovation and rapid development, the company has provided high-quality HDPE drainage ditch products for multiple key projects such as railways, highways, airports, municipal engineering, and island and reef construction.