Xyoo Tshiab yuav los sai sai hauv peb lub tebchaws, yog li peb yuav xa cov khoom rau peb cov neeg siv khoom ua ntej Xyoo Tshiab.Cov ntaub ntawv ntawm cov khoom xa tawm lub sijhawm no suav nrog: 12Cr1MoVg, Q345B, GB / T8162, thiab lwm yam. Peb lub tuam txhab cov khoom tseem ceeb suav nrog: SA106B, 20 g, Q345, 12 Cr1MoVG, 15 CrMoG, ...
Nyeem ntxiv