产品用途：

难熔金属在高温环境下仍然保持极低的饱和蒸气压，因此作为热屏和加热带，不会给高温炉带来挥发性杂质污染。 

Application:

Refractory metals still maintain a very low saturated vapor pressure in the high-temperature environment. Therefore, as a heat shield and heating belt, they will not cause volatile impurity pollution to the high-temperature furnace.

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.