BN垫片

.special-char { font-family: "Helvetica Neue", Helvetica, Arial, sans-serif!important;vertical-align: baseline;font-style: normal;font-weight: 300;} 氮化硼承烧板采用高纯度99.7%氮化硼陶瓷制成，在惰性气体（2100°C）和真…