... resisting 3.no bubble and no processing trade4.long time to use Efforts 1, tolerance control (min:±0.1)2, ... accurate dimension according to customs’ request 3, complete after-service systerm SpecificationOD:1.3 ... pinching, burning mouth and so on The special one, pls kindly send me the drwaingApplication: Widely used in the filed of semiconductor, metallurgy, chemical ...