Yangquan Zhongjia Abrasives Co., LTD was established in 2007. With great development and expansion, it has a become the biggest professional research and production base for grinding wheel and cutting wheel. Currently, we have advanced production equipments, and we are able to use top-ranking crafsmanship to work on and produce rosin cutting wheel and cut-off grinding wheel. With strong technology strength and rich production experience as quality-control system,we have obtained ISO9001:2000 Quality Attestation and German MPA Product safety Attestation. We build up a complete raw materil quality control system, and adopt world-advanced and scientific test and examination approach to check on the product quality,making the product a nationalwide quality level.    With the excellent quality and great competitive edge, the" Kingseat" and "Hopping great" series of rosin grinding wheels products not only account for the a part of national market, but also covering Southeast Asia and Europe market, enjoying a high prestige around the world.