Henan Jingping Reference Materials Research Institute  Main Products: Riffle Sampler, Float-and-Sink Tank, Customized Crucible Stands, Special Cupel Stands, Ignition Wires  Crucible Stands  Cupel Stands  Oxygen Bomb  Oxygen Bomb Calorimeter  Oxygen Filling Apparatus  Silicon Carbide Tubes  Electrolysis Cells  Standard Coal Samples  Sulfur Reference Samples  Caking Index Bituminous Coal  Calorimeters, Sulfur Determinators, Ash Fusion Testers, Caking Index Testers, Plastic Layer Testers, Muffle Furnaces, Crushers, Float-and-Sink Tanks, Cross-Cut Sample Dividers, Pulp Sampling Pots, Concentration Pots, Density Pots, Sampling Buckets, Standard Coal Sample Sieves, and Various Custom Stainless Steel Coal Shovels and Other Coal Laboratory Supplies.