Including a series of operations such as picking, cutting, bulging, segmenting, rolling the center angle, shrinking the bottom, etc., to ensure that the size of the external shell is accurate and the shape meets the standard‌

After picking, cutting, flattening, bulging, and other steps, it is necessary to roll the thread, test the water and leak detection, etc. to ensure the sealing and quality of the inner shell‌

The external shell and the inner shell are matched with the cup mouth, welded, pressed to the center bottom, welded the bottom, and then vacuumed, measured temperature, electrolyzed, polished, and finally inspected, sprayed with paint, silk-screened, packaged, etc., and the finished product is put into storage‌