产品用途：

 在蓝宝石长晶炉中，钨支柱和底座给钨坩埚提供稳定的支撑。

Application:

In sapphire crystal growth furnace, the tungsten column & bottom provide stable support for tungsten crucibles.

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.