Usually using automotive stainless steel chassis circular array direct feed structure, the shape structure, size and pipe pin number can be customized according to the actual needs of the user (the sample using D18,2400B (variant required) structure).This type of package products use pressure type glass sealing process, can also use pressure resistant ceramic PGA process, can meet the requirements of rear channel micro-assembly and parallel seam welding process. The process structure features are as follows: