1. The illegal operation of 3.5 million diesel oil is a particularly serious case. The criminal suspect will be sentenced to fixed-term imprisonment of more than five years by the people's court, with a fine of more than one time and less than five times the illegal income or confiscation of property. According to the relevant provisions of the law, those who engage in illegal business activities in violation of state regulations and disrupt market order, if the circumstances are serious, shall be sentenced to fixed-term imprisonment of not more than five years or criminal detention, and shall be fined not less than one time but not more than five times the illegal income. If the circumstances are especially serious, he shall be sentenced to fixed-term imprisonment of not less than five years, and shall also be fined not less than one time but not more than five times for illegal gains or confiscation of property.

2. Legal basis: Article 225 of the Criminal Law of People's Republic of China (PRC)

The crime of illegal business operation violates the provisions of the state and commits one of the following illegal business operations, disrupting the market order, and if the circumstances are serious, it shall be sentenced to fixed-term imprisonment of not more than five years or criminal detention, and shall also, or shall only, be fined not less than one time but not more than five times the illegal income; If the circumstances are especially serious, he shall be sentenced to fixed-term imprisonment of not less than five years, and shall also be fined not less than one time but not more than five times for illegal gains or confiscation of property:

(a) operating a franchise or monopoly commodity or other commodities whose operation is restricted by laws and administrative regulations without permission;

(2) buying and selling import and export licenses, import and export certificates of origin and other business licenses or approval documents stipulated by laws and administrative regulations;

(three) without the approval of the relevant competent departments of the state, illegally engaged in securities, futures, insurance business, or illegally engaged in fund payment and settlement business;

(four) other illegal business activities that seriously disrupt the market order.

Second, what are the constitutive elements of the crime of illegal business operation?

1. Object elements: The object of the crime of illegal business operation is the state market management system that restricts the sale and purchase of commodities and business licenses;

2. Objective requirements: engaging in franchise, monopoly goods or other restricted goods without permission, buying and selling import and export licenses, import and export certificates of origin, business licenses or other approval documents stipulated by laws and administrative regulations, and engaging in other illegal business activities that disrupt market order and have serious circumstances;

3. Subject elements: the subject of the crime of illegal business operation is the general subject, that is, all natural persons who have reached the age of criminal responsibility and have criminal responsibility ability. Units can also become the subject of the crime of illegal business operation. Usually, it means that a normal person who has reached the age of 16 constitutes the crime of illegal business operation, while a person who has not reached the age of 16 or a mental patient cannot constitute the crime of illegal business operation. The so-called "unit" refers to all kinds of companies, enterprises, institutions and other legal persons and organizations;

4. Subjective elements: the subjective aspect of the crime of illegal business operation is intentional and has the purpose of seeking illegal interests.