The main types are:①No sealing material sealing machine. Including hot-pressing, cold-pressing, fusion-welding, plug-in, folding and other sealing machines.②There is a sealing material sealing machine. Including rotary type, knurling type, crimping type, pressing type and other sealing machines.③There is an auxiliary sealing material sealing machine. Including tape type, adhesive type, staple type, ligation type, suture type and other sealing machines