Mikhail Eremets and colleagues from the Max Planck Institute of Chemistry last year announced that they have discovered that hydrogen sulfide (H2S) becomes superconducting at -70°C (additional conditions are required), which is the highest superconducting temperature record to date. Their paper was published in the journal Nature in August this year. On October 18, two Italian researchers published papers on preprinted websites, evaluated the work of Eremets et al., and tried to explain theoretically the working principles. The Eremets study has once again stimulated new research into superconductivity. Scientists are competing to find superconducting materials that can operate at higher temperatures. One candidate is H3S. Electronic Chemicals,99.8% Cas 7553-56-2,Iodine Crystal 99.8% Cas 7553-56-2,Iodine Crystal 99.8% HENAN BON INDUSTRIAL(CHEMICAL) CO.,LTD , https://www.bonchemical.com