
| Mfululizo wa API | LTC, STC, BTC, EUE, NUE, XC |
| Mfululizo wa TP | TPEX, TPCQ, TPCQE, TPNF, TPJC, TPFJ, TPG2, TPQR |
| Mfululizo wa BG | BGC、BGT1、BT-FJ、BGT2、BGBC、BGT3 |
| Mfululizo wa HSM | HSM-1、HSM-2 |
| Mfululizo wa CB | HQSC1、HQST1、CBS3 |
| Mfululizo wa WsP | WSP-1T,WSP-2T,WSP-3T,WSP-4T |
| Mfululizo wa JFE | Mbweha, Dubu |
| Mfululizo wa TSH | 3SB、Hydril CS、Hydril PH6 |
| Mfululizo wa VAM | Vamtop、NewVam、VamFJLAna OTTM、OTTG、TMK-FMC、NSCC、HUNTING-APEX |
Uchunguzi
5-1203, Eneo la Viwanda la Dahua, Barabara ya Yunshui Nambari 2, Eneo la Maendeleo ya Teknolojia ya Juu, Xi'an, 710065, Uchina
86-13609153141