Graphite Crucible, Ceramic Crucible, Quartz Crucible manufacturer / supplier in China, offering Small-Scale Melting Single-Ring 3 Kg Graphite Crucible Ideal for Precious Metals & Alloys, Industrial-Grade Single-Ring 3kg Graphite Crucible High Strength Long Lifespan for Harsh Environments, Melting Gold Graphite Crucible with Double Ring and so on.