Good morning Sir,
How are you? It is pleasure to contact you ??
Please allow me to introduce myself and Gem-Duo Co.   I am Jonathan, the sales representative of Gem-Duo Co., Ltd.which is the subsidiary of Gem-Year Group, the #1 fasteners manufacturer worldwide in terms of quantity delivered     We are located in Shandong Province , China with annual capacity up to 200,000 tons.   We are capable of providing various types of fasteners, especially DIN912, 931, 933 & 934.

and machine tool accessories,collet.chuck.cnc tools holder,adopter

If you have any needs ,please do not hesitate to contact me, thank you very much.
Best regards,
Jonathan