Zhongtong pipe has obtained various certifications, compresa la certificazione nazionale per le imprese high-tech, Certificazione del servizio post-vendita a cinque stelle, quality management system certification and environmental management system certification.
The company has a diversified customer base and has served more than 2,680 grandi imprese, including well-known universities such as Nanjing University of Science and Technology and Zhejiang University, government agencies such as Taicang Water Conservancy Bureau, famous facilities such as Changzhou High-speed Railway Station, as well as Nongfu Spring, Gruppo Giardino di campagna, Nanjing Metro 4 Line and other well-known companies.
![](https://www.cn-hdpe.com/wp-content/uploads/2023/12/factory-1.jpg)