the design concept of jie’s 30th anniversary logo is derived from the number of rings in the tree which means the tree is 30 years old and the rings are full of life and vitality.mr.chen demu,the founder of jie drive,has struggled for 30 years, not for grass but for the tree , and not strive for top 500 but for 500 years. 30 years is only a beginning and there will be countless 30 years in the future,just like teh big trees stand for thousands of years. excellent from expertise and jie peoples will never forget the original ideals and aspirations,and forge ahead!