i need 4000 units of custom size hard case. max 4 pounds Logo:Silk screen Rubber logo PVC logoFoam:Pre-cut Foam Custom FoamFeature:Waterproof Shockproof DustproofCertification:ISO9001 ROHS REACH IP67Usage:Multi-purpose Usage, ProtectiveInternal Size:263*173*95mmOEM:YesOperating Temperature:-40℃ to 98 ℃Type:caseColor:black orange custom