- Tianjin JinYi screw Co.,ltd
- Address：D9 Haihang East Road, Ninghe Modern Industrial Zone, Tianjin（Exit of Jinning Highway Future Technology City）
- Tel：022-26799461、26799716
- Mobile：18622255638
- Fax：022-26799462
- Website：www.www.askfmhacking.com
- E-mail : yangjingli@www.askfmhacking.com