Trade shows — print a unique QR for each booth or banner. Setup: WeChat + Campaign + "canton1".
Business cards — add a QR so Chinese contacts see your Brand Page. Setup: WeChat + Campaign + "card1".
KOL partnerships — give each influencer their own code. Setup: Douyin + KOL + "wang1".
Product packaging — print on boxes or inserts. Setup: WeChat + Campaign + "pkg01".
Paid ads — one code per ad campaign. Setup: Baidu + Ad + "sem01".
