Source-grounded facts extracted from TANCHENG GROUP CO., LTD.'s SEC 8-K filings across all families, newest first. Each cites a verbatim SEC excerpt.
TANCHENG GROUP CO., LTD. engaged Guangdong Prouden CPAs GP as its auditor.
“On February 27, 2026, the Board of Directors of the Company approved the appointment of Guangdong Prouden CPAs GP (“Guangdong Prouden”) as the Company’s new independent registered public accounting firm for the fiscal year ending December 31, 2025.”
TANCHENG GROUP CO., LTD. dismissed Onestop Assurance PAC as its auditor.
“On February 27, 2026, the Board of Directors of Tancheng Group Co., Ltd. (the “Company”) approved the dismissal of Onestop Assurance PAC (“Onestop Assurance”) as the Company’s independent registered public accounting firm, effective immediately.”
Longjiao Li was appointed as Director at TANCHENG GROUP CO., LTD..
“On October 12, 2023, the Board of Directors (the “Board”) of the Company appointed an additional director, Ms. Longjiao Li, to the Board.”
Caixia Zhang was appointed as Chief Financial Officer at TANCHENG GROUP CO., LTD..
“appointed Ms. Caixia Zhang as the Company’s Chief Financial Officer”
Yu Yang resigned as Chief Financial Officer at TANCHENG GROUP CO., LTD..
“Upon Ms. Caixia Zhang’s appointment, Mr. Yu Yang will automatically resign as the Company’s Chief Financial Officer.”
Yu Yang was appointed as Chairman of the Board at TANCHENG GROUP CO., LTD..
“appointed Mr. Yu Yang, currently the Company’s Chief Executive Officer, President, Chief Financial Officer, Secretary, and Treasurer, as the Company’s Chairman of the Board.”
Longjiao Li was appointed as director at TANCHENG GROUP CO., LTD..
“appointed an additional director, Ms. Longjiao Li, to the Board.”
TANCHENG GROUP CO., LTD.: Adopted a code of ethics that applies to all directors, officers and employees (effective 2023-03-14).
“On March 14, 2023, we adopted a code of ethics that applies to all directors, officers and employees, including our principal executive officer, principal financial officer, principal accounting officer or controller or persons performing similar functions.”
TANCHENG GROUP CO., LTD. completed an acquisition involving Zhan Jue Cheng Limited and Zhang Caixia Limited (closed 2023-03-20).
“On March 20, 2023, the Contribution was completed.”
TANCHENG GROUP CO., LTD. engaged Onestop Assurance PAC as its auditor.
“On December 9, 2022, the Board of Directors of the Company approved the appointment of Onestop Assurance PAC (“Onestop Assurance”) as the Company’s new independent registered public accounting firm for the fiscal year ending July 31, 2023.”
TANCHENG GROUP CO., LTD. dismissed Mac Accounting Group, LLP as its auditor.
“On December 9, 2022, the Board of Directors of Bigeon Corp. (the “Company”) approved the dismissal of Mac Accounting Group, LLP (“Mac Accounting”) as the Company’s independent registered public accounting firm, effective immediately.”
Facts are extracted by an LLM and gated to those whose source quote is present verbatim in the filing text. Coverage is best-effort while backfill and monitoring mature; this is not yet a full-market index. See methodology.