To achieve welding of two different shaped items, the items to be welded are as shown in Figures 1 and 2. Welding time for a single sample: 7-8 minutes / PC. Process requirements: weld seam width 1-2mm. After welding, the product requires pressure holding for 5 seconds without leakage under 20KG pressure. Assembly requirements: after assembling the two products, there are 5 to 6 wires. (Requirements and processes can be customized).