Hongyan Tiancheng (Beijing) Intelligent Automation Technology Co., Ltd. is an international automation company, specialized in offering Siemens and Allen-Bradely products. Our main business Siemens SIMATIC plc, S5 S7-200/S7-300/S7-400 PLC, inverters, converters, master drives, software WINCC, power supplies, Relays, circuit breakers, soft starters and motor protection switches Allen-Bradely SLC500 1746 1747 PLC, controllogix 1756 plc, Flexlogix 1794 plc and 2711 HMI panel view plc If you are interested in our products, please contact us.