Phone:

86-22-60214471

Fax:

86-22-60214689

E-mail:

oel@263.net；oel@email.tjut.edu.cn

Web site:

www.oelett.com  www.oelett.net

Postal address:

391  Binshui-West Road,  Xiqing District, Tianjin 300384, China