| Billings Optics Inc. | |
| Tel: +86-513-85439092 |
|
| Faks: +86-513-85663223 | |
| To'da: +86-18921602300 | |
| Email: info@billings.cn | |
| Qo'shish:695 Changtai Road, Tangzha Dushi, sanoat hududi, Nantong, Jiangsu, Xitoy | |
| Billings Optics Inc. | |
| Tel: +86-513-85439092 |
|
| Faks: +86-513-85663223 | |
| To'da: +86-18921602300 | |
| Email: info@billings.cn | |
| Qo'shish:695 Changtai Road, Tangzha Dushi, sanoat hududi, Nantong, Jiangsu, Xitoy | |
