1. The preparation of the group standard "Safety Management Specifications for Enterprises in Height Suspension Cleaning Operations" strictly follows the "Standardization Work Guidelines: Structure and Preparation of Standards" (GB/T1.1-2009) to complete relevant work. 2. It is compiled with reference to the "Standardization Law of the People's Republic of China" and the "Group Management Measures of the Ningxia Housekeeping Service Industry Association" and combined with the actual situation and the characteristics and actual needs of the housekeeping service industry. 3. Completed various technical contents proposed in the standard formulation project application form. 4. This standard fills the gap in similar local or group standards in Ningxia.