Peb lub tuam txhab txij li thaum nws pib ua kom zoo li lub neej ua haujlwm, txhim kho cov khoom lag luam hauv tebchaws Reagent,Ob oxides ntawm tooj liab,Cua sov tooj liab oxide nrog carbon,Yooj Yim Cuav Carbonate,Dihydratecupric chlorideCov. Peb mob siab rau cov khoom siv thev naus laus zis thiab cov kev xaiv rau koj tus kheej! Cov khoom yuav muab rau thoob plaws lub ntiaj teb, xws li Tebchaws Europe, Algeria, Durban, Durban, kev hloov kho tshiab thiab muaj kev ntseeg tau thaum 20 xyoo dhau los. Peb tsom mus rau muab kev pab rau peb cov neeg siv khoom tseem ceeb hauv kev ntxiv dag zog rau peb txoj kev sib raug zoo ntev ntev. Cov khoom lag luam txuas ntxiv ntawm cov khoom lag luam qib siab ua ke nrog peb cov khoom ua ntej zoo heev - Thiab tom qab kev pab cuam muag kom muaj kev sib tw muaj zog hauv kev ua lag luam thoob ntiaj teb.
Tso koj cov lus