I think there is 16 years between the signing of Stiga's Liu Guoliang and Xu Xin!
I like the blade very much!
Yes, most of people are just copying the answers...
Liu Guoliang has been in contract with STIGA since 1993 and in 2009 Xu Xin signed with STIGA, definitely there are 16 years between the signing of STIGA's Liu Guoliang and Xu Xin.
I believe that there is 16 years between Stiga´s signings of Liu Guoliang and Xu Xin (i´m not sure about signing dates so it might also be just a bit under 16 whole years).