secwatch.observer — SEC 8-K summary
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Issuer:     TANCHENG GROUP CO., LTD. (QSJC)
CIK:        0001753391
Form:       8-K
Filed at:   2026-03-02T23:59:59+00:00
Accession:  0001683168-26-001381
Event type: other_material
Sentiment:  negative
Materiality: 0.55
Item codes: 4.01, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

Tancheng Group dismisses auditor Onestop Assurance, appoints Guangdong Prouden
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- Dismissed Onestop Assurance PAC effective Feb 27, 2026; its FY2024 and FY2023 reports included a going-concern emphasis.
- No disagreements with Onestop; only previously disclosed material weaknesses in internal controls were noted.
- Appointed Guangdong Prouden CPAs GP as new independent auditor for fiscal year ending Dec 31, 2025; no prior consultation.
- Material weaknesses include lack of audit committee, inadequate internal control structure, and poor IT controls.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/1753391/000168316826001381/0001683168-26-001381-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/1753391/000168316826001381/tancheng_8k.htm
  HTML page:      https://secwatch.observer/filing/0001683168-26-001381

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