最近中文字幕免费MV第一季歌词,欧美一级婬片AAAAAAA欠钱,gogogo高清在线观看免费视频完整,国产裸体美女免费无遮挡

剛玉莫來石制品

剛玉質(zhì)、剛玉-莫來石制復(fù)相制品，具有良好的熱震穩(wěn)定性、高溫強度和致密度，是玻璃窯爐、加熱爐、化工窯爐、冶金工業(yè)爐的首選優(yōu)質(zhì)材料。

CORUNDUM  PRODUCTS

Corundum products、corundum-mullite products have properties of good thermal shock resistance,high strength at high-temperatures and high density.they are the first selected super materials for glass furnaces,heating furnaces,chemical kilns and metallurgic furnaces.

CORUNDUM  PRODUCTS