The property company has a business license, but it has no qualification. Can it be affiliated with other units' qualifications?

No, unless you use the business license and qualification certificate of another enterprise, the business license and qualification certificate must be the same enterprise. If you must use the qualification of your own property management company, you can apply for temporary third-level property qualification in the local (municipality directly under the central government, province, prefecture-level city) real estate management department in accordance with the Provisions of the Ministry of Construction on the Qualification Management of Property Service Enterprises. You need a registered property management engineer, five certificates of property management and five certificates of other engineering, financial and economic professionals with intermediate titles.