Drs Ding and Kildahl made their version by grinding up barium carbonate, calcium carbonate, niobium oxide and iron oxide, mixing the resulting powders, and then baking the mixture in an oven.

Ding 和 Kildahl 博士通过研磨碳酸钡、碳酸钙、氧化铌和氧化铁，混合所得粉末，然后在烤箱中烘烤混合物来制作他们的版本。