Vim li cas thiaj xaiv SHANVIM Sab Phaj① Kev soj ntsuam zoo: kev sim hardness, metallographic qauv, machinery kev soj ntsuam, ultrasonic soj ntsuam, siab zaus infrared carbon thiab nto tsom xam thiab lwm yam.② Cov khoom sib tw: zoo zoo nrog tus nqi tsim nyog.③ Muaj zog hnav tsis kam thiab lub neej ntev, tuaj yeem siv rau hauv ib puag ncig hnyav thiab puas tsuaj loj.④ Kev tshaj lij: peb lub Hoobkas muaj ntau tshaj 20 xyoo kev ua haujlwm hauv casting thiab forging txheej txheem thiab tsim khoom.⑤ Peb tuaj yeem muab cov qauv tsim raws li peb cov neeg siv khoom xav tau thiab tseem ua kom zoo dua peb cov khoom los ntawm peb cov neeg siv khoom tawm tswv yim.
