Contact information
| Office | Tel | Fax |
| Nanjing | (+86)25 6853 0600 | (+86)25 6853 0619 |
| Zhenjiang | (+86)511 8558 2335 | (+86)511 8888 3008 |
| Shanghai | (+86)21 5683 1662 | (+86)21 5683 1662 |
| Tianjin | (+86)22 2439 7111 | (+86)22 2495 1301 |
| Guangzhou | (+86)20 3727 9612 | (+86)20 3727 9612 |
| Changchun | (+86)431 8598 1598 | (+86)431 8598 1598 |
| Hong Kong | (+852)2615 1488 | (+852)2615 9711 |
| Saudi Arabia | (+966)12 6513188/6512488 | (+966)12 6579288 |
OTL Technology Centre
Address: 238 Lantian Road , Nanjing Airport Economic Zone ,211113 , Jiangsu,China
Tel : +86 (0)25 6853 0600
Fax : +86 (0)25 6853 0619
Address: 238 Lantian Road , Nanjing Airport Economic Zone ,211113 , Jiangsu,China
Tel : +86 (0)25 6853 0600
Fax : +86 (0)25 6853 0619
OTL Industrial Centre
Address : 57 Yinhe Road , Da Gang , New Industrial Zone , Zhenjiang 212132 , Jiangsu, China
Tel : +86 (0)511 8558 2335
Fax: +86 (0)511 8888 3008
Address : 57 Yinhe Road , Da Gang , New Industrial Zone , Zhenjiang 212132 , Jiangsu, China
Tel : +86 (0)511 8558 2335
Fax: +86 (0)511 8888 3008