... ultrasonic lace sewing machine could sew up various kinds of materials directly, meanwhile, can do trimming, punching, impressing, then ... Pillowcase/Pillow Slip, Automobile Cover, Packing string, Knapsack, Travelling Bag, Portable Shopping Bags, Curtains, Raincoat, Wind Coat, Snow coat, ... the above processing will be finished together with pressure.2. There’s no fog and spark in produce processing, ...