| TAI KEE PIPES LIMITED | Private company limited by shares | Live |
| P S P PIPES LIMITED | Private company limited by shares | Dissolved |
| HK NEW CENTURY PIPES COMPANY LIMITED | Private company limited by shares | Dissolved |
| MAN CHIT PIPES LIMITED | Private company limited by shares | Live |
| kirin pipes co., Limited | | Live |
| XINXING DUCTILE IRON PIPES CO., LIMITED | | Live |
| EAST ASIA PLASTIC PIPES CO., LIMITED | Private company limited by shares | Live |
| Eternal Pipes Limited | Private company limited by shares | Live |
| FU NGAI PIPES FACTORY LIMITED | Private company limited by shares | Dissolved |
| HK BOSS PVC PIPES & FITTINGS MANUFACTORY LIMITED | Private company limited by shares | Dissolved |
| INTERPACIFIC OIL PIPES LIMITED | Private company limited by shares | Live |
| HK JIULONG RIFENG PIPES COMPANY LIMITED | Private company limited by shares | Live |
| ZHEJIANG KINGFUN PIPES LIMITED | Private company limited by shares | Dissolved |
| Pipes in C Major Limited | Private company limited by shares | Dissolved |
| MARBLE PIPES COMPANY LIMITED | Private company limited by shares | Dissolved |
| WAH TAI PIPES AND MATERIAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| PACIFIC PIPES LIMITED | Private company limited by shares | Dissolved |
| PLASTIC PIPES LIMITED | Private company limited by shares | Live |
| GIO NGAI PIPES PRODUCT LIMITED | Private company limited by shares | Live |
| SHANGHAI AIJIE PIPES LIMITED | Private company limited by shares | Dissolved |
| SHANGHAI AIDEKANG PIPES INDUSTRY CO., LIMITED | Private company limited by shares | Dissolved |
| SHANGHAI DIFEILE PIPES COMPANY LIMITED | Private company limited by shares | Dissolved |
| SHANGHAI FIRST GROUP PIPES LIMITED | Private company limited by shares | Dissolved |
| SHANGHAI HENGTONG PIPES LIMITED | Private company limited by shares | Live |
| SHANGHAI HENGYU PIPES LIMITED | Private company limited by shares | Live |
| SHANGHAI HUATAI PLASTIC PIPES LIMITED | Private company limited by shares | Dissolved |
| SHANGHAI RUIJIE PIPES INDUSTRY LIMITED | | Live |
| SHANGHAI JIANNENG PIPES LIMITED | Private company limited by shares | Live |
| SHANGHAI JINCHENG PIPES COMPANY LIMITED | Private company limited by shares | Live |
| SHANGHAI JINCHI RIFENG PIPES COMPANY LIMITED | Private company limited by shares | Dissolved |
| SHANGHAI JINGBA PIPES LIMITED | Private company limited by shares | Dissolved |
| SHANGHAI JINYOU PIPES COMPANY LIMITED | Private company limited by shares | Live |
| SHANGHAI KANGQIAO PIPES COMPANY LIMITED | Private company limited by shares | Dissolved |
| SHANGHAI LIANSHUI PIPES COMPANY LIMITED | Private company limited by shares | Dissolved |
| SHANGHAI QIKAI PLASTIC PIPES LIMITED | Private company limited by shares | Dissolved |
| SHANGHAI RIFENG PIPES LIMITED | Private company limited by shares | Dissolved |
| SHANGHAI YINGFEITE PIPES TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| SHANGHAI WANTONG PIPES LIMITED | Private company limited by shares | Dissolved |
| HK SHUANGNIU PIPES COMPANY LIMITED | Private company limited by shares | Dissolved |
| PipeScan AI Limited | | Live |