Which one is better for cleaning the external wall?

Beijing Environmental Sanitation, Qidi City Clothing, Beikong City Resources, Amak, Eton, etc.

1. Beijing Environmental Sanitation

Beijing Environmental Sanitation Engineering Group Co., Ltd., founded in 1949, is a domestic comprehensive environmental service provider, which is a large state-owned sole proprietorship enterprise engaged in urban and rural environmental comprehensive services, waste resource utilization, solid waste equipment manufacturing, environmental sanitation technology research and development, environmental sanitation engineering construction, etc., and has formulated 15 national and local environmental sanitation operation standards, creating a "big sanitation, full coverage and integration" suitable for China's national conditions.

2. Qidi City Service

Qidi City Environmental Service Group Co., Ltd., a wholly-owned subsidiary of listed company Qidi Environment (stock code: 826), is an innovative integrated urban environmental service provider integrating sanitation operation, domestic waste sorting, smart public toilet construction and operation, community service, landscaping, property management and other services. Qidi City Service Project is distributed in 27 provinces and cities, with over 5 operating projects, with a cumulative cleaning area of 1 billion square meters.

3. Beikong Urban Resources

Beikong Urban Environmental Protection Resources Investment (China) Co., Ltd., a comprehensive waste management solution service provider in China, was listed on the Hong Kong Stock Exchange in 22 (stock code: 3718), mainly engaged in providing environmental sanitation services and hazardous waste treatment services, including road cleaning, garbage collection and transportation, garbage transfer station management and public toilets.

4. Amateur

Amateur Service Industry (China) Co., Ltd., whose American headquarters was founded in Philadelphia in 1936 and listed on the new york Stock Exchange, is a global professional enterprise in the field of catering, facilities and uniform outsourcing services, focusing on providing facilities management services and catering services for various institutions and enterprises.

5. Eton

Beijing Eton Hotel Service Co., Ltd., the Eton Group originated in Asia, is an internationally renowned provider of integrated facilities management solutions, and is committed to providing integrated facilities management services such as energy management, renewable energy, catering services, large-scale nutrition catering, high-end catering, space environment design, asset management, security, cleaning, and handling equipment leasing, and its business covers more than 8 cities in China, as well as Southeast Asia and Central Asia.

refer to Baidu Encyclopedia-Beijing Environmental Sanitation Engineering Group Co., Ltd.