items:2012 hot selling silicone keychain 1.merterial: 100% food grade silicone 2.certificates: FDA,LFGB, ... Gauge, caliper, Coordinate measuring machine, projection machine,2. roughness tester, hardness tester and so on. QC 1) Technicians self-check in production ... box,Pebag,OEM packaging available!Imagescertificates 2012 hot selling silicone keychain