Gemhold (sjz) Trading Co. Ltd. is based in China and lists Mineral Powder products on Global Trade Plaza, including Fire Assay Crucible and Fire Assay Flux. The company lists 2004 as its year of establishment. The Fire Assay Crucible is made of fire clay, designed for smelting and assaying with high density, long-lasting use (3-5 times), high mechanical strength, and resistance to thermal shock and corrosive fire assay environments. It features a special formula, curing and pressing process, and is used in precious metal analysis, mining laboratory, laboratory testing, mineral assaying, and fire assaying. The Fire Assay Flux is available in gold-free and silver-free types, with custom manufacturing options based on customer recipes or internal specifications, and includes assay-grade litharge production with low gold and silver content.