Beijing Hanzhuo Air Purification Equipment Co., Ltd. was established in 2003. It is a comprehensive high-tech enterprise engaged in overall indoor air purification system solutions, central air conditioning system cleaning and disinfection, maintenance services, as well as research and development, production, and sales services of central air conditioning cleaning equipment. The company has over ten years of technical experience and a comprehensive pre-sales consultation and after-sales service system, providing timely, professional, and long-term air purification services to our customers. The company is fully responsible for the promotion, service, and sales of the NATURE CLEAN air purification series products in the Beijing area. NATURE CLEAN is based on unique NAPHO nanophotonic technology and SNEP stationary electrode technology, with zero consumables. The PM2.5 purification module can be repeatedly cleaned and used within ten years. The product can effectively solve the problem of small particles such as PM2.5 in the air, as well as eliminate bacteria, viruses, organic pollutants such as formaldehyde and benzene, and odors. Suitable for various places such as commercial buildings, office buildings, cultural and entertainment buildings, transportation buildings, public buildings, residential buildings, etc. Professional knowledge: We are the expert participating unit of the first local standard for cleaning air conditioning and ventilation systems in China - "Hygiene Management Specification for Centralized Air Conditioning and Ventilation Systems in Public Places" (DB11/T 485-2007). We participated in the entire standard writing process and have a good understanding and grasp of the content of the standard. From 2009 to 2013, the company's technical holder served as the Deputy Secretary General of the Industrial Cleaning Subcommittee of the National HVAC and Purification Equipment Standardization Committee. Rich experience: Over the past 15 years, we have provided air conditioning and ventilation system cleaning services to nearly 100 clients, including Beijing Capital International Airport Terminal 1, Lenovo Group, Agricultural Bank of China Headquarters, Oriental Plaza, Yingke Center, and China National Offshore Oil Corporation Building. Our services cover various industries such as office buildings, hotels, guesthouses, government agencies, office buildings, and factories. We have cleaned over 5 million square meters of building area and over 1 million square meters of building air ducts. First class equipment: The cleaning equipment has obtained qualifications from the National Center for Disease Control and Prevention, and has obtained 8 national utility model patents and 1 invention patent (ZL20141023349.4). Honor and Certification: In 2009, we were awarded the title of "Top Ten" National Brands for Central Air Conditioning Cleaning. Obtained the high-tech enterprise certificate in 2012 and 2015. The first batch of units registered with the Beijing Health Supervision Institute. One of the first ten units in Beijing to obtain the qualification for air conditioning duct cleaning. ISO9001 Quality Management System Certification. ISO14001 Environmental Management System Certification. GB/T28001 Occupational Health and Safety Management System Certification.