Features: ★ Using high-quality all-graphite crucible, the service life can be up to 500 times. ★ The highest temperature can reach 1300℃, and it can melt metals with a melting point lower than 1300℃. For example: gold, silver, copper, aluminum, zinc, tin, etc. ★ Large capacity, can melt 6KG copper, 1.6KG aluminum, 7KG silver, 12KG gold. It takes about 20-25 minutes to melt 6KG copper.