\"inquiry\" > \"electroni" />
1. after logging in to China Unicom APP, click "service" > "inquiry" > "electronic invoice" on the home page, and select the required invoice type.
2. You can log on to www. 100 10.com, click Query > Basic Business Query > Electronic Invoice on the homepage, and then select the invoice type you need to operate.
3. You can visit the following website /qA5yV for consultation.