日产精品高潮呻吟AV久久,熟妇高潮一区二区三区,精品香蕉久久久午夜福利

Honor and qualification

精益的生產(chǎn)工藝以及完善的ISO9001質(zhì)量體系ISO14001環(huán)境管理體系及 ISO18001職業(yè)健康安全管理體系

ASME certificate
Pressure vessel manufacturing license
Boiler manufacture license
LR Lloyd's certification
Invention patent for radial vibration centrifugal casting method
Invention patent of axial vibration centrifugal casting method
Invention patent for centrifugal production method of bimetallic tube billet
304L-SA210 bimetal hot rolling tube blank production method invention patent
Invention patent for thin-wall bimetallic tube centrifugal production method
Invention patent for furnace tube rotary and intermittent feeding type display frame
Invention patent for furnace tube welding centering and gas protection device
Invention patent for a new type of centrifugal casting tube die end cover fixing device