Item 4.01. Change in Registrant's Certifying Accountant

On October 4, 2022, the Board of Directors of Petro USA, Inc., a Nevada corporation (the "Company"), approved the engagement of Gries & Associates, LLC ("Gries") as the Company's independent registered public accounting firm for the Company's fiscal year ended June 30, 2022, effective immediately, and dismissed Boyle CPA, LLC ("Boyle") as the Company's independent registered public accounting firm.

Boyles's audit reports on the Company's consolidated financial statements as of and for the fiscal years ended June 30, 2021 and 2020 did not contain an adverse opinion or a disclaimer of opinion and were not qualified or modified as to uncertainty, audit scope or accounting principles, except an explanatory paragraph regarding the Company's ability to continue as a going concern.

During the fiscal years ended June 30, 2021, and 2020, and the subsequent interim periods through October 4, 2022, there were (i) no disagreements (as described in Item 304(a)(1)(iv) of Regulation S-K and the related instructions) between the Company and Boyle on any matter of accounting principles or practices, financial statement disclosure, or auditing scope or procedure, which, if not resolved to Boyle's satisfaction, would have caused Boyle to make reference thereto in their reports on the financial statements for such years, and (ii) no "reportable events" within the meaning of Item 304(a)(1)(v) of Regulation SK.

The Company provided Boyle with a copy of the disclosures it is making in this Current Report on Form 8-K and requested that Boyle furnish a letter addressed to the Securities and Exchange Commission stating whether or not it agrees with the statements made herein. A copy of Boyle's letter dated October 4, 2022, is filed as Exhibit 16.1 hereto.

During the fiscal years ended June 30, 2021, and 2020, and the subsequent interim periods through October 4, 2022, neither the Company nor anyone acting on its behalf has consulted with Boyle regarding (i) the application of accounting principles to a specific transaction, either completed or proposed, or the type of audit opinion that might be rendered on the Company's financial statements or the effectiveness of internal control over financial reporting, and neither a written report or oral advice was provided to the Company that Boyle concluded was an important factor considered by the Company in reaching a decision as to any accounting, auditing, or financial reporting issue, (ii) any matter that was the subject of a disagreement within the meaning of Item 304(a)(1)(iv) of Regulation S-K, or (iii) any reportable event within the meaning of Item 304(a)(1)(v) of Regulation S-K.

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