Add:Room C-473, Jinmao Mansion, No.139 of Gong Qing Tuan Road,zhangdian district, Zibo city, Shandong province
Post Code::
E-mail:tbmh@sina.com
Detail Information
Shaft of SiN: the life time is over two years during normal condition, resistant to shocking, moisture, oxidization, etc.
Graphite shaft: the life time is over 3 months during normal condition.