What business scope does stone maintenance belong to?

Reference for business scope of stone maintenance technical service company 1:

General business items: crystal maintenance, lesion treatment, seamless treatment and damage repair of stone; Sales of crystal stone maintenance supplies.

(Projects subject to approval according to law can only be operated after approval by relevant departments)

See 2 for the business scope of Stone Maintenance Technical Service Company:

Stone maintenance and technical consultation.

(The above-mentioned scope involves projects that need to be approved by national laws and administrative regulations, and may not be operated without approval. )

See 3 for the business scope of Stone Maintenance Technical Service Company:

Project contracting; Stone renovation and maintenance; Carpet cleaning; Exterior wall glass cleaning; Floor engineering design and construction; Domestic service; Property services; Municipal services; Cleaning, collection and removal of urban garbage; Hotel linen washing.