PLC, VFD, Breaker manufacturer / supplier in China, offering Siemens S7-1200 Digital Expansion Board for Control Systems 6ES7221-3BD30-0XB0, G120xa 1.5kw 4.1A 380-440V Variable-Frequency Drive 6SL3220-1YD14-0CB0 SIEMENS, G120xa 0.75kw 2.2A 3AC Variable-Frequency Drive 6SL3220-1YD10-0CB0 SIEMENS and so on.