Home/ Technology transfer
door viswer factary for sell
Our president Shao Wencai, a senior engineer, has been engaged in the work of optical design for many years. He participated in and developed the first generation of domestic door viewers in 1978, invented new-type 180° door viewer in 1990 with the national patent (Patent No.: 90-2-06925.X) and the double-use door viewer in 1998 (Patent No. ZL 98 2 01793 6). We improved the optical system in 2006 (Patent No.: 200620119436.3) Our current products include double-use door viewer, exquisite brass door viewer fireproof door viewer, projection door viewer, etc.
Added:
26.03.2008 Offer viewed:
290 (hits)
| Member Information |
|
| Sold by: |
Amenda Yang |
| Phone: | 008610-61557022 |
| Your address: | Langfu Industrial Park,Tongzhou Dis |
| Company name: | Beijing Oupuoptic Instrument Co., L |
| Location: | China
|
)
Our president Shao Wencai, a senior engineer, has been engaged in the work of optical design for many years. He participated in and developed the first generation of domestic door viewers in 1978, invented new-type 180° door viewer in 1990 with the national patent (Patent No.: 90-2-06925.X) and the double-use door viewer in 1998 (Patent No. ZL 98 2 01793 6). We improved the optical system in 2006 (Patent No.: 200620119436.3) Our current products include double-use door viewer, exquisite brass door viewer fireproof door viewer, projection door viewer, etc.