This chapter looks at two global cities, Paris (France) and Guangzhou (People’s Republic of China) as garment major trading centres. A comparative analysis of the two metropolises allows the authors to build a sociological explanatory model of how garment wholesale markets function. It draws on the existing literature, media and industrial reports, supplemented by observations and interviews carried out in both cities from 2020 to 2023. Over the years, the same city makers have played a role in shaping the markets in both cities: small entrepreneurs, private and public real estate investors, and local authorities. The interplay of players explains markets’ transformations, the moving from one area to an another, the upgrading of the physical infrastructures. From the perspective of economic sociology, the authors argue that wholesale markets are not only economic but also social devices. While markets may appear free, highly competitive and opportunistic, wholesalers aim to limit the number of partners they trade with. The aim of wholesalers is to develop long-term relationships of trust with as many customers as possible. In this context, relations of common ethnic origin are an asset.