Yuav ua li cas rov qab tau tooj dag los ntawm cov dej khib nyiab los ntawm polishing tooj dag qhov chaw?

Brass yog ib qho alloy ntawm tooj liab thiab zinc. Cov dej khib nyiab los ntawm polishing. Brass yog nyob rau hauv hmoov. Yog tias tsis muaj lwm yam stains, tsuas yog lim lawv. Xav smelt tooj liab tuaj yeem ua rau ntawm cov khoom siv ntub dej smelting.

Cov khoom siv tooj liab smelting yog qhov nyuaj thiab kev nqis peev loj heev. Tej zaum nws yuav nyuaj rau cov peev nyiaj rov qab yog tias koj tsuas yog yuav cov tooj dag slag kom rov qab tau koj tus kheej. Nws yog qhov zoo dua rau ncaj qha mus yuav cov khoom seem mus rau qhov chaw rov ua dua tshiab thiab cia cov kws tshaj lij smelting Hoobkas tsim cov tooj liab rov qab.

Yog tias koj muaj lus nug, thov hu rau peb. Peb lub tuam txhab tuaj yeem tsim ntau yam koob txhaj tshuaj, koob tshuaj kho mob, koob txhaj tshuaj, koob tshuaj hypodermic, koob txhaj tshuaj, koob tshuaj tiv thaiv kab mob, koob txhaj tshuaj, koob txhaj tshuaj, koob txhaj tshuaj, koob xaum koob, koob ovum khaws koob, koob txhaj tshuaj, thiab lwm yam Yog tias koj xav tau kev kho koob cov khoom, thov hu rau peb. Peb tos ntsoov rau koj qhov kev nug! Qhov zoo ntawm cov khoom tsim nyob rau hauv peb lub Hoobkas yuav txaus siab rau koj!

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