Quanzhou is another one, a famous port in China which is close to Guangzhou. You can choose to visit bag manufacturers in Quanzhou if you want to make sports laptop travel bags.
Everyone konws that Yiwu is a well-known Chinese city with the largest commodity wholesale market in the world. That means you can find almost all kinds of bags and cases there. But you'd better do a investigation first or you may be lost in the market.
good Chinese bag manufacturer