... or customized.Quality control1, Welded by our hot-air welding machine when they are in process.2, ... )A: 15-20 minutes, just change the air inside the ball at least every 30 minutes. ... Professional Machines for Cutting, Welding and Printings.6. Including Air Pump (Blower), TIZIP zipper made in Germany, repair ... and material patch), storage bag, User's manual.7. Air blowers are CE, UL and GS approved in ...