We are supplying kinds of case and base for electronic components,such as crystal resonators,oscillators,OCXO,TCXO,VCXO, ... 36x22,36x27,20x20.......We are supplying kinds of case and base for electronic components,such as crystalresonators,oscillators,OCXO,TCXO,VCXO,filters ... and so on.If you are using such products, ...