Cov iav zoo tib yam, High Borosilicate iav thiab siv lead ua iav

Ua ntej tshaj plaws, peb yuav tsum nkag siab tias cov khoom tseem ceeb ntawm lub khob yog dog dig iav, siab borosilicate iav thiab crystal iav. Cov khoom no muaj lawv tus cwj pwm thiab haum rau kev siv sib txawv. 1.ord iav: Qhov no yog cov khoom siv iav feem ntau, nws cov txiaj ntsig yog tus nqi qis, zoo transparency, zoo cua sov tsis kam. Txawm li cas los xij, lub hardness ntawm decir im yog tsawg, nws yog ib qho yooj yim mus tawg, thiab nws yooj yim mus tawg thaum kub thiab txias hloov. 2. High borosilicate iav: lub khob ntawm cov khoom siv no muaj cua sov zoo heev, tuaj yeem tiv thaiv qhov kub thiab txias rau 150 degree c, thiab tsis yooj yim tawg.