生产多晶硅的氢化炉用石墨内胆
生产多晶硅的氢化炉用石墨内胆
Graphite Liner for Hydrogenation Furnace of Poly-silicon Production
生产多晶硅的氢化炉用石墨内胆
Graphite Liner for Hydrogenation Furnace of Poly-silicon Production
