... easy to use5)OEM orders are welcomFeatures:bubble envelope is made of composite elastic shock materials ... paper and bubble film inner compound directly. Ensure 100% recovery, consist with environmental protection requirements. Application:Mailing electronic ... spare parts, medical equipment, watches, pharmaceuticals, glass products, etc.Bubble Specification:Diameter of 5MM, 10MM, 15MM, 22MM, 25MM, 28MM ...