Xiamen Yudian Automation Technology Co., Ltd(YUDIAN),has been devoted to the development and manufacture of industrial process automation controllers since 1991. Through several years of development, YUDIAN has become the number one Chinese intelligent instrument manufacturer, claiming the biggest domestic market share with the sales volume of over 400,000 instruments per year. Our instruments are applied to chemical, petroleum, metallurgy, pharmaceutical, food and beverage and academic ...