Where can I get the invoice of Tianjin 120 ambulance fee?

The electronic bill of medical charges in Tianjin Emergency Center has been put into operation. After the medical emergency service, the municipal emergency center will send electronic bills through SMS, WeChat and other channels. At the same time, the municipal emergency center has set up service points in the petition service center and six emergency sub-centers to facilitate the elderly and citizens who have accidentally lost their electronic bills to choose the nearest service point to print their bills.