Before June 30, 2022, according to Article 2 of the Announcement of the Ministry of Finance and the State Administration of Taxation on Further Accelerating the Implementation Progress of the Tax Refund Policy at the End of Value-added Tax (AnnouncementNo. 17 of the Ministry of Finance and the State Administration of Taxation, 2022), the centralized refund time of medium-sized enterprises was adjusted to "before June 30, 2022, on the basis of taxpayers' voluntary application, the centralized refund of the remaining tax credits of medium-sized enterprises."