Above frit middle iron content amounts being required to amount to 5 % .
釉料中含铁量需达5％以上。
Lead oxide in seal frit used for making window assemblies for argon and krypton laser tubes .
用于氩和氪激光管窗体组件制造的密封釉料所使用的氧化铅。
This factory owner will make the potteries such as various garden , indoor decorator and gift , sets artistic frit to develop center , can offer high quality porcelain product and various frits for customer .
