Shandong Benyuan Crystal Technology Co., Ltd., established on 2015-03-31, Business scope includes high temperature piezoelectric crystal,Thermal insulation material,pipeline,valve,sensor,optical crystal,Production of Crystalline Materials,Sales,technology development,Technical Design,technical consulting,Technical Services;Technology development of graphene products,technical consulting,technology transfer,Technology Promotion,Technical Services;Shield machine,Development of full-face boring machine and accessories,Sales,lease,repair,technical consulting;Import and export business;Technology development of electronic products and non-specialized communication equipment,technical consulting,Technology Transfer and Sales.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)