TANCHENG GROUP CO., LTD. 8-K

What Happened
Tancheng Group Co., Ltd. (QSJC) filed an 8‑K reporting that on February 27, 2026 its board dismissed Onestop Assurance PAC as the company's independent registered public accounting firm and appointed Guangdong Prouden CPAs GP as the new auditor for the fiscal year ending December 31, 2025. Onestop Assurance’s audit reports for the years ended December 31, 2024 and 2023 were unqualified except they included an Emphasis of Matter and explanatory paragraph noting substantial doubt about the company’s ability to continue as a going concern. The company provided Onestop Assurance a copy of the filing and obtained a letter from Onestop Assurance dated February 28, 2026 (filed as Exhibit 16.1).

Key Details

• Dismissal and appointment effective February 27, 2026: Onestop Assurance dismissed; Guangdong Prouden appointed for fiscal year ending Dec 31, 2025.
• Onestop Assurance’s reports for 2024 and 2023 included an Emphasis of Matter and explanatory paragraph about substantial doubt regarding going concern.
• No disagreements or reportable events with Onestop Assurance during 2023–2024 or through Feb 27, 2026, except previously disclosed material weaknesses in internal control over financial reporting.
• Material weaknesses disclosed as of Dec 31, 2024: lack of adequate internal control structure/oversight (company had only a sole director/executive officer before Oct 12, 2023 and no Audit Committee) and inadequate IT controls/backups and off‑site data storage.
• Guangdong Prouden did not provide consultation to the company on accounting or auditing matters during the two most recent fiscal years and the interim period through Feb 27, 2026.

Why It Matters
A change in auditors is a material governance event investors watch closely. The prior auditor’s Emphasis of Matter about going concern and the company’s disclosed material weaknesses in controls point to financial and governance risks that could affect the reliability of future financial reports. Investors should note the company has appointed a new auditor and disclosed the control deficiencies; they may want to monitor upcoming filings (e.g., quarterly/annual reports) for remediation steps, audit opinions from the new auditor, and any further management or governance changes.