According to the survey in official website, Zhangjiagang Re-employment Training Center is located in Tangqiao Zhangjiagang Free Trade Zone, which mainly provides welding professional skills and quality training for 18-year-old students, on-the-job workers, laid-off workers and migrant workers. Therefore, there is a test of welding in Zhangjiagang Tangqiao.

Zhangjiagang City belongs to Suzhou City, Jiangsu Province, located in the east of Chinese mainland, on the south bank of the lower reaches of the Yangtze River.