Mr.Chang is the Director of Legal Services Division, Deputy Director of foreign law Division in the Kingbird Law firm and one of the experts of the Government Procurement.

• 现担任河南省体彩中心、郑州市工商联家庭装修装饰商会、河南省睢州商会法律顾问、河南龙飞医药连锁集团公司、中华风旅游.；郑州执行机构等多家单位常年法律顾问。