Legal analysis: The operation of this decoration company must have relevant decoration qualifications. Therefore, if you open a decoration company, you need a company's decoration qualifications. If you don't have one, then your operation is illegal. Companies without decoration qualifications are breaking the law and will face penalties.

Legal basis: Article 225 of the "Criminal Law of the People's Republic of China" The following fixed-term imprisonment or criminal detention, and concurrently or solely a fine of not less than one time and five times but not more than one time the illegal income; if the circumstances are particularly serious, shall be sentenced to fixed-term imprisonment of not less than five years and a fine of not less than one time but not more than five times the illegal income or confiscation of property: ① Failure to do so: Those who are licensed to operate special items, monopoly items or other restricted items as stipulated in laws and administrative regulations ② Buy and sell import and export licenses, import and export certificates of origin and other business licenses or approval documents stipulated in laws and administrative regulations ③ Without Relevant state departments approve the illegal operation of securities, futures, and insurance businesses, or illegally engage in fund payment and settlement business ④ Other illegal business activities that seriously disrupt market order