Hong Thai Automation Electromechanical Co., Ltd is proud to be the distributor of all SMC pneumatic equipment, automation equipment such as: pneumatic valves, pneumatic cylinders, water filters, pressure regulators and pressure sensor,.. In addition we supply motorized vehicle spare parts.Hong Thai Automation Electromechanical Co., Ltd is proud to be the distributor of all SMC pneumatic equipment, automation equipment such as: pneumatic valves, pneumatic cylinders, water filters, pressure regulators and pressure sensor,.. In addition we supply motorized vehicle spare parts.