Spring and summer are in July of the first year.
Autumn and winter are in February, usually before the Spring Festival.
Basically more than half a year in advance.
3. Details of the exhibition:
Different brands have different policies:
Some business routes are close to wholesale, so that a single paragraph is fixed, some will require basic quantitative, and some are a pack.
The most fundamental difference is that some will agree to exchange goods; Some of them are made according to your order, and basically they can't be exchanged.