This is an inquiry message about Black glass balls; in the 108th China Canton Fair. (这是一条买家关于"Black glass balls;"的询盘信息,来自第108届中国广交会。)Inquiry Message (询盘信息) Black glass balls; Customer Service; Can you supply black glass balls? If so pleas quote the following: 5500pcs of a 5/16""( 0.3125"") Black Glass, Polished with Special Grade Requirements; Dia. Tolerance +/-0.0001"" Roundness/Spericity: 0.0001"" Weight .645G-.672G Specific Gravity 2.515 +/-2% Surface Finish 1.0 micro-inches, Highly Polished ***MUST MEET ABOVE SPEC*** Contact Info (联系信息) Tammy Cahill 43416 Company: Machining Technologies, Inc. E-mail: tammy@machiningtech.com tammy@machiningtech.com