Excuse me, where can I find this kind of manual delivery in Shantou, or distribute a lot of goods to relatives and friends?

A lot! There are many factories in Xiashan for you to cut lines and turn over bags, there are also many in Heping for you to tear paper or label, or there are also many in Chendian Valley. You can go to the factory and ask directly However, it may be far from your golden jade club. You'd better find someone closer. If so, just go to the factory and ask them if they have it. Anyway, they all belong to their own village!