Transpring Transpring--Quality First, Service Best! Established in 2004, Transpring has been the leading manufactory for high-end CBD and THC oil atomizer and battery kits in China.More than 40% hemp oil atomizers in USA market are made in Transpring . It also has been the original supplier of Open Vape since 2011. In order to expand oversea business, Transpring has established sales offices in Shenzhen , Hong Kong and the USA . Our main products :0.3ml/ 0.5ml/1.0ml mini cartomizers , such as Atomizer A8, A3, A4, Battery Mix2, L5, Fast Charger C2 and C1 etc.