Customized Semiconductor Parts Currently,our factory is busy processing some large welded vacuum chamber. In China, the large parts processing market is not very competitive, especially when parts size is over 4000mm, because the large machining machines cost a lot. However, our factory invested over than USD 1 million last year to purchase 4 large machining centers, the workbench, one set is 3000mm, 2 sets 4200mm, 1 set 6500mm, which can be proved that our factory is powerful. Background: Vacuum cavity welding is divided into traditional welding and special technic welding. http://www.szlaiku.net/semiconductor-parts/