Nanjing Witech Co., Ltd founded in Nanjing in 2015, is a technology-oriented enterprise specializing in indoor environment solutions (household-5-Constant System). As the pioneer and leader of household-5-Constant System in China, Nanjing Witech Co., Ltd is the first enterprise in China to achieve the household application and market adoption of 5-Constant System. It has ranked first in China’s retail market share for several consecutive years. The company owns the country’s first R&D and testing center for household-5-Constant System, the first digital smart manufacturing plant for household-5-Constant System in China, and holds over 220 patented technologies. From pioneering to leading, Nanjing Witech Co., Ltd has been dedicated to the niche track of 5-Constant System for more than 10 years, continuously innovating and expanding its service boundaries. It has now formed a multi-product matrix and multi-scenario solutions, covering 52 cities across 13 provinces in China. Nanjing Witech Co., Ltd consistently adheres to independent R&D, independent production, and independent branding, building a full lifecycle and full industry chain ecosystem integrating R&D, production, sales, installation, and operation and maintenance.