The walls of the furnace are always scoured. 冶炼炉墙总会被烧蚀。
At the further request of our new and old customers, the multicrystal silicon smelting furnace and crystalloid processing apparatus now are on the way of research and development. 为了满足新老客户的需求，目前我公司多晶冶炼炉和晶体加工设备正在研制中。
