Legal analysis: Any possible illegal act can be investigated and collected on the basis of suspicion. However, before law enforcement, the other party must produce a law enforcement certificate. There must be more than two law enforcement officers.

The administrative department for industry and commerce at or above the county level may exercise the following functions and powers when investigating and banning the suspected unlicensed operation:

(1) Ordering to stop relevant business activities;

(two) to investigate and understand the relevant situation from the units and individuals related to unlicensed operation;

(three) to enter the unlicensed business premises for on-site physical examination;

(four) to consult, copy, seal up and detain contracts, bills, account books and other materials related to unlicensed operation;

(five) seizure, seizure of tools, equipment, original procedures, products (commodities) and other property specially used for engaging in unlicensed business activities;

(six) to seal up unlicensed business premises that have evidence that they are harmful to human health, have major security risks, threaten public safety and destroy environmental resources.

Legal basis: Article 6 of the Regulations on Administration for Industry and Commerce shall include:

(a) to handle the preliminary registration, annual inspection and replacement procedures of enterprises registered and managed by the district and county industrial and commercial bureaus within their jurisdiction, and to supervise and manage the enterprises approved and registered by the district and county industrial and commercial bureaus;

(two) to manage the markets within their respective jurisdictions and supervise the trade and economic activities of the markets;

(three) to supervise and inspect the conclusion and performance of economic contracts within the jurisdiction, and to mediate disputes over economic contracts;

(4) Accepting, examining and reporting the applications for opening, changing and closing of individual industrial and commercial households within its jurisdiction, and supervising and managing the production and business activities of individual industrial and commercial households;

(five) to guide enterprises, institutions and individual industrial and commercial households within their jurisdiction to apply for trademark registration correctly, and to supervise and manage their use of trademarks;

(six) to supervise and manage the advertisements set up and posted within the jurisdiction;

(seven) according to the provisions of the collection and payment of various industrial and commercial charges and fines;

(eight) to publicize the laws, regulations and relevant policies on industrial and commercial administration;

(nine) other administrative duties for industry and commerce as prescribed by laws and regulations.