Ultra hard materials can manufacture any a variety of dressing tools ,drilling tools, grinding tool and microchip you may be using now. We also design fabricate customerized machinery electric equipment to better fit your needs. we provide more consistent ...

Dongtai Ultrasonic Gem Machine Co.,Ltd, founded in 1994, is a gemstone machine company which specialized the production of ultrasonic punching and carving machine.We provide excellent service, undergoing more than ten years development, product sell all ...