What's the cupels 

Cupels are made from high quality dead burnt magnesia (MgO). Hard, smooth surface with consistency in weight and size. Provide exceptional results in gold mines, precious metal refiners, alloy melters, hallmarking, geological and test laboratories worldwide.

  Widely Used for smelting and assaying

• Precious Metal Analysis
• Mining Laboratory
• Laboratory Testing
• Mineral Assaying
• Fire Assaying 
• Gold Assaying

 Changsha Jintuo Experimental Equipment Co., Ltd.

 was the manufacter for crucible ,cupels ,melting pot  over 15 years .

• Got factories In shandong province and hunan respectively 
• With a strong reputation for our high quality products
• Regarded as a leader in the fire assay experimental facilities industry in china
• Service the market with a variety of ceramic shapes for melt and assay  mineral,metals etc.
• Insist on using advanced and mature technology and techniques in production with high-standard quality control system.
• clients from all over China, and export the products to Canada, Australian, Spanish and South Affric etc.