Dongtai Company is a wholly owned company which has more than 10 years’s experience in researching, making and sales of ultrasonic gem machinery company. It has more than ten branch in domestic , and products throughout the ***** products export abroad including Thailand, India, Vietnam, Myanmar, Brazil and other countries. Our pays more attention to the quality, brand, and service, also the whole heart people-oriented service to customers. The equipment, which used in processing crystal stone, agate jade, miscellaneous man-made stone, other stone and shells, bone fossils, etc. Our company has the first-class technical personnel for the customer, can design and make factory gem species. Since its establishment of 10 years Dongtai brand ultrasonic automatic punching machine, automatic carving machine, punching machine, cleaner and manual machine and accessories series gems with excellent quality, perfect after-sales service, products sold throughout the country and exported abroad, promoted throughout the rapid development of the industry gems. Carving delicate, elegant, and greatly reduce the cost and improve the efficiency. 　　More from punching, carved in stone processing become outstanding. Dongtai except for product research and improvement of the unremitting, and give more technology help and guide to the customers.