Z-STONE Tech Co., Ltd. was established in 1989, it has a Doctor and Master degree based highly educated R&D and managerial team, Z-STONE specializes in researching, developing, manufacturing and exporting telecom equipment, microwave spread-spectrum apparatus and radio train dispatching device for more than 10 years. The application scopes of products involve the railroad, the telecom and the petrochemical. Z-STONE owns many specialized techniques and the patented technology, products were aw...View More