Hong Kong Imports from China of Thermionic, Cold Cathode or Photo-cathode Valves and Tubes was US$9.69 Million during 2021, according to the United Nations COMTRADE database on international trade. Hong Kong Imports from China of Thermionic, Cold Cathode or Photo-cathode Valves and Tubes - data, historical chart and statistics - was last updated on May of 2024.