产品用途：
用于生产蓝宝石单晶体。密度不小于18.3g/cm3，最大直径600mm。
Application:
They are used to produce sapphire single crystals by Kyropoulos Method. The density is not less than 18.3g/cm3, and the maximum diameter is 600mm.
按图纸生产，如有特殊要求，双方具体商定。
The products shall be manufactured according to the drawings.
Special requirements will be agreed upon by the supplier and buyer.
