reducing annealing furnace还原退火炉
reducing the furnace temperature凉炉
melting-reducing shaft furnace熔化
folding type reducing annealing furnace折叠式还原退火炉
silver reducing furnace银还原炉
reducing with BORIS furnace包利斯炉还原
multibarrel reducing furnace多管式还原炉
Mg reducing furnace镁还原炉
reducing furnace height降低炉体