Not much. According to Baidu map query, there are four clothes modification shops in Qingdao, namely:

Chengtai Modifies Clothes, Address: No.4 Community, Huacheng Road, Deyang Road, Chengyang District, Qingdao;

Repair trouser legs and change clothes in Room 202, Unit 3, Heilongjiang Middle Road 1094, Licang District, Qingdao;

Qiaolinglong professional refit clothing store, tailoring address: Room 002, Building 28, Fushan Housi Community, Shibei District, Qingdao, Shandong Province;

Clothing modification of Qiaoyifang, address: Room 2, Unit 2, No.1 17, Xianyou Road, Shinan District, Qingdao, Shandong Province.