... steel carbon structures, strong and durable. 4, Variable frequency, variable speed, according to fabric, moisture, steam supply ... prevent leakage, safety and reliability, save energy. 7. Three-phase electrical system, overload protection, voltage and short circuit ... you can choose. 11, Roller quantity, one, two, three, four, you can choose. modelYP11 377030Ironing speed5--15m/mintemperature150cmotor ...