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Contract price adjustment, how to deal with invoices?

1. If the invoice has not been issued for more than one month, it can be directly withdrawn and invalidated, and a new invoice can be issued.

2. If the invoice has not been issued for more than one month, it can be withdrawn directly and a new invoice can be issued.

3. Ask for price reduction for some reason, sign a supplementary contract for price adjustment, and then issue a red-ink invoice with reference to Articles 14 to 19 of the Regulations on the Use of Special VAT Invoices.