Xiamen Yudian Automation Technology Co., Ltd(YUDIAN), leading Manufacturer since 1991, design and manufacturing Temperature controller, temperature instrument, temperature indicator, temperature recorder, flow totalizer, temperature sensor, SSR, thyristor trigger, etc all industrial process control system. 400, 000pieces per year sold, 1000 sq factory. Please contact Mamie or send E to yudianautomation(at)yahoo.com