Calcium carbide

Tsev Rau sab kawg

Peb nyob nraum zoo-lub npe hu ua ib qho ntawm kev coj muaj calcium carbide cov chaw tsim khoom thiab lwm tus neeg nyob hauv Suav teb. Thov koj xav yuav cov calcium carbide zoo muag ntawm no los ntawm peb lub hoobkas. Txog kev sab laj, hu rau peb.