... are 6 mm x 4 mm, 7 * 4,8 * 4,9 * 4,9 * 5,10 * 4,10 * 5,12 * 5,13 * 6 ... , customs, railway, aviation. Container, pharmaceutical, foreign trade import and export commodity inspection and processing, and enterprise product testing, packaging barrels packaging, energy metering ... .35 yuan a range, but also to OEM, welcome to inquireThe original seals are made by metal LEAD, this materials are not good ...