| Z-Stone was in railway signal di***tching business since 1989 and started repeater business in 2002. It is a researching and developing oriented enterprise specializing in R&D, manufacturing and selling telecom equipments. Our product range covers from 400Mhz to 15GHz, such as TETRA, GSM-R, GSM, DCS, C***, WC*** ect.Z-Stone locates in China¡¯s radio micro-wave industrial city ¨C Quanzhou, with more than 18000 Sqm areas and currently has around 400 employees of which more than 80 are technical engineers. Z-Stone has more than 12 production line covers from module-production/test to whole set repeater assembling/test, our annual product ability exceeds 35,000 pcs. Every module is produced by Z-Stone workshop, over 95% of our products are repeaters of which over 98% are provided OEM/ODM service for many of the well-known telecom co***nies in the world.
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