GREEEN SPANNER multi-connector installation process, developed in 2013, went nationwide from Xi’an in 2015. In the service process, always pay attention to the process as the starting point of the service, the construction and application of the online service platform as the continuation of the service, while exporting the standardized construction process and service system, always focus on the development and implementation of the installation process and service of home HVAC equipment. Truly, from the three perspectives of [ materials] + [process] + [service], it makes the best performance of air conditioning equipment while extending the service life of the equipment. As of 2023, Green Wrench has nearly 100 franchisee partners in the country, and together with 1300+ installation technicians and 1000+ sales consultants nationwide, the national unified standard Green Wrench process is delivered to the majority of end users.