The installation technology of multi-evaporator air conditioners of Green Spanner has been developed since 2013 , and expanded from Xi’an to the whole country in 2015. For the service process, Green Spanner always takes the emphasis on installation technology as the starting point of service, and the establishment and application of online service platforms as the continuation of service, exporting standardized construction techniques and service systems to the outside world. Focused on: research and development, implementation of installation technology for household HVAC equipment; And provide professional platform services to franchised comfort home service providers. Truly achieve the best performance of air conditioning equipment and extend its service life from three perspectives: process, service, and auxiliary materials. Green Spanner always adheres to the service mission of " Make a comfortable home, make it more comfortable ", working together with nearly 100 franchisees and partners across the country, over 1300 installation technicians, and over 1000 sales consultants, to deliver the national unified standard process of "peace of mind and peace of mind" to end-users.