It depends on whether you just make your own clothes or customize them for the school. If you are wearing your own clothes, search major map software to find tailor shops or clothes customization. There are many shops. If it is mass customization in school, it can be customized in an online manufacturer of a cat or a treasure. The local garment factories include Henry Garment Factory, Sheng Xing Garment Processing Factory, Zhuoou and Ou (Beijing) Garment Co., Ltd.
The landlord has a large quantity and shop around.