Zibo yufeng company has all kinds of specifications GaoYaFu 158 sets, annual output of quartz crystal 120 tons, of the piezoelectric crystal level 50 tons, optical crystal 40 tons, tuning fork crystal 30 tons. Factory early, relying on shandong university crystal materials institute and large-scale production, and invite domestic famous military enterprise of crystal growth experts into the factory technical guidance, 2002, we also hired Japan crystal growth experts, make crystal varieties and quality have reached a new leap, 2006 hire Russian experts as technical guidance, optical crystal quality also had greatly enhance, at present we through improving the detection means, to ensure the quality of products, in 1998, through ISO9001 quality system certification. High quality production that we have Japanese KDS, NDK, KCR into a large number of famous international partners.