Carriage bolts have no drive on the head, but the square neck under the head has the function to fix position of the bolt. A carriage bolt is a fastener without drive usually to connect wood and metal, generally used in lock systems and alarm systems.
- 2019 Holiday Notice of Tomb Sweeping Day.
We will close our company for Tomb Sweeping Day from Apr 4 to Apr 7, 2019. Returning to the office on Monday Apr 8. Thank you very much for your support and understanding.Read More
- 2019 Holiday Notice of Labor Day.
We will close our company for Labor Day at May 1, returning to the office on Thursday May 2. Thank you very much for your support, we really appreciate all the help.Read More
- ISO 9001: 2015 Quality Management
We update our ISO 9001:2015 certificate at July 2018.Read More