... (superior to0.1degree). Innovation 1. Five steps temperature control program, setting rate from 0.1~40degree/min, can be setted ... precision of temperature control, (superior to0.1degree). 2. Parameters of control can be setted from keyboard, functions of maxium ... . Fixed 450degree protection circuit, maxium protection temperature can be setted from keyboard, system dead protection. 4. The equipmemt ...