The telephone number 186 6615 6715 is a customer service and tracking number for a parcel delivery company called Sunyou 顺友. The number can be used to contact the team customer service team for the branch in ZhongShan City in Guangdong Province.
Sanyou operate a number of lockers across Zhongshan 中山 for recipients to collect their express delivery. These operate on the same principle as Amazon lockers； a delivery guy will put your parcel in the locker and send you a code in order to later open the locker and collect the package.
If you have any difficulties collecting your package or locating your locker then phone the Sunyou 顺友 customer service team on 186 6615 6715. They will provide support.