Is the certificate of home-based care issued by the housekeeper universal in China?

This is national. The "Certificate of Home-based Care for the Aged" issued by the housekeeper is a kind of home service guarantee plan, which is common throughout the country. The plan provides a series of services such as 24-hour telephone consultation and on-site maintenance for emergencies in family life, including water and electricity maintenance, home appliance maintenance, pipeline dredging, door and window maintenance and gas maintenance.