亚洲—本道 在线无码AV发,内射老妇女BBWXOX,欧美精品一区二区三区A片,无码人妻丰满熟妇区五十路百度

High frequency porcelain

高頻瓷件 高頻瓷件

High frequency porcelain Description:
Steatite (also known as high-frequency ceramic), the main component MgO SiO2, color white, acid resistance, good chemical stability, high insulation, strong adsorption, high temperature (1200-1300 ° C), insulation resistance ≥ 100MΩ (with DC500V megger check); dielectric strength; AC2000V/50HZ/1min no breakdown, is a good electrical insulating ceramic materials. Can be used in electronic products coil, heat conductive tube, pipe sleeve, shell or matrix such resistance.