1997- Y.S.Company was established.

1999- Xuan Tong Company was established.

2005- The company changed its name to Xuan Tong Technology Engineering .

2015- The company increased capital to NT $ 120 million.

2006- ISO 9001 certified.

2007- The company relocated to Zhannan Guangyuan Science and Technology Park.

2010- To obtain a special air conditioning qualification certificate.    

2010- Class A electrical equipment industry registration certificate.

2015- Class A water pipe contractor registration certificate.

2017- The company changed its name to Xuan Tong Technology  System Integration and

          increased capital to NT $ 220 million.