... CE certific CE certificate 4KW double mould high frequency sealing machine for PVC About the roduct 1. Spark suppression device ... With Special electronic circuit,when sparks occur,the machine can cut the high frequency,reduce the damage.Also, ... bag, stationery, nameplates, blowing toys, shoes material, water bed, carpet embossing, car seat covers, the shade,the car door plank,and ...