Exhibit 32.1

Certification of Principal Executive Officer and Principal Financial Officer

Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to

Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the Quarterly Report of Rapid Line Inc. (the “Company”) on Form 10-Q for the period ended April 30, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Jiang Jian, certify pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to the best of my knowledge and belief:

1. The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: July 7, 2025

By:	/s/ Jiang Jian
	Jiang Jian, President, Secretary,
	Treasurer, Principal Executive Officer,
	Principal Financial Officer and
	Principal Accounting Officer and
	Sole Director