Taicang is a dual enterprise, and only Sino-German Shuang (Taicang) Education Technology Co., Ltd. ... Sino-German Shuang Yuan (Taicang) Education Technology Co., Ltd.: No.0/08, Dongcang South Road, Taicang City. Dual system is a vocational training model originated in Germany. The so-called dual system means that vocational training requires trainees to receive training in two places. A system refers to a vocational school, whose main function is to impart professional knowledge related to occupation. The other is off-campus training places such as enterprises or institutions, whose main function is to let students receive professional training in vocational skills in enterprises. This model is widely used in German enterprises, and has also been used for reference or adopted by some domestic enterprises in recent years.