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Machining Sand Casting Professional Cast Brass
Taw qhia tooj liab alloys nrog zinc raws li lub ntsiab alloying ntsiab feem ntau yog ua los ntawm tooj dag.Yog li zinc hauv tooj liab muaj cov tshuaj zoo ntxiv zog, tib lub sijhawm, feem ntau alloying ntsiab kuj tuaj yeem yaj nyob rau hauv ntau qib hauv tooj dag, ntxiv txhim kho nws cov khoom siv dag zog, yog li ua cov khoom siv tooj dag ...
