vitrified bond diamond grinding polishing abrasive discs 1.Specifications:Diameter 400mm 2.Application: widely used in grinding semiconductor ferrite materials,hard brittle material and metal material processing and others, 3.Grinding:rough grinding,finish grinding,semi-finish grinding,high precision grinding 4,Grinding way:wet grinding 5.Coolant :water 6.Payment way:T/T,Western Union,Money Gram 7.Transport way:International express such as SF,UPS,DHL,Fedex,DPex,EMS etc. 8.Port :Shenzhen,Shanghai,Beijing,Hongkong 9.Skype:nina-superhardtools 10.InternationalQQ:1912337285(chatting tool)