{"url_path":"/sec/fcuv/10-q/2026/body","section_key":"body","section_title":"Body","topic":"sec","document":{"doc_type":"10-Q","doc_date":"2026-05-14","source_url":"https://www.sec.gov/Archives/edgar/data/1590418/0001683168-26-003903-index.html","accession_number":"0001683168-26-003903","cik":"0001590418","ticker":"FCUV","issuer_name":"FOCUS UNIVERSAL INC.","edgar_url":"https://www.sec.gov/Archives/edgar/data/1590418/0001683168-26-003903-index.html","primary_entity_key":"0001590418","primary_entity_name":"FOCUS UNIVERSAL INC."},"word_count":484,"has_tables":true,"body_markdown":"EX-31.1\n2\nfocus_ex3101.htm\nCERTIFICATION PURSUANT TO SECTION 302\n\n**Exhibit 31.1**\n\n**CERTIFICATION PURSUANT TO SECTION 302**\n\n**OF THE SARBANES-OXLEY ACT OF 2002**\n\nI, Desheng Wang, certify that:\n\n1) I have reviewed this quarterly report on Form 10-Q.\n\n2) Based on my knowledge, this\nreport does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made,\nin light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;\n\n3) Based on my knowledge, the\nfinancial statements, and other financial information included in this report, fairly present in all material respects the financial condition,\nresults of operations and cash flows of the Registrant as of, and for, the periods presented in this report;\n\n4) I am responsible for establishing\nand maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over\nfinancial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the Registrant and have;\n\n(a)\nDesigned such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure the material information relating to the Registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;\n\n(b)\nDesigned such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;\n\n(c)\nEvaluated the effectiveness of the Registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation.\n\n(d)\nDisclosed in this report any change in the Registrant's internal control over financial reporting that occurred during the Registrant's most recent fiscal quarter (the Registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the Registrant's internal control over financial reporting; and\n\n5) I have disclosed, based on\nour most recent evaluation of internal control over financial reporting, to the Registrant's auditors and the audit committee of the Registrant's\nboard of directors (or persons performing the equivalent functions):\n\n(a)\nAll significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the Registrant's ability to record, process summarize and report financial information; and\n\n(b)\nAny fraud, whether or not material, that involves management or other employees who have a significant role in the Registrant's internal controls over financial reporting.\n\nDate: May 14, 2026\nBy:\n/s/ Desheng Wang\n\nDesheng Wang\n\nChief Executive Officer\n\n** **"}