4J33 Alloy has a thermal expansion coefficien similar to porecelain. It is used for vacumm electronic component. 4J42 and 4J29 alloys have a thermal expansion coefficient similar to glass and easily form compact oxide film necessary for the sealing.
Our products usually exported to England, India, Malaysia, Singapore, Korea, Japan, Iran, Turkey and are widely used in our domestic industries as Sinopac, Morimatsu, Jiuli Group etc. some other countries, we treat every inquiry seriously and always do our best to reply within the first time. We sincerely looking forward to build our business relations with your esteemed company and it would be our pleasure to have your contacts.
