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Block Silicon Nitride Ceramic Block Silicon Nitride/Si3N4 Ceramic High Wear Resistant Block. US 2.00-10.00 ... 99% Boron Nitride Ceramic Parts Material 99% Hot Pressed Boron Nitride/HPBN Ceramic/BN Ceramic Color Light Grey Usage Ceramic insulating parts in high temperature furnace Available Max. ... AliExpress | 1688.com | Taobao Global ...
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