Vienna Hotel was founded in 1993, with "comfortable and elegant, luxury quality, safety and environmental protection, music and art, leading health" as the core value of the product. Under Venus Royal, Vienna International, Vienna and 3 good hotel four brands. As of 2014, the Vienna Hotel has more than 30,000 rooms and more than 20 million registered members. Has opened and planned to open branch network throughout the country 80 large and medium-sized cities, in the country has more than 300 branches, and to open 60-80 new branches every year at the rate of development.

Before choosing love green, Vienna using other brands add incense machine, early use of normal But a lot of problems in the later, let the hotel manager is very discontent, through various channels to find understand brand sweet atmosphere And choose green hotel love sweet atmosphere system as its sweet atmosphere partners, love accumulated for more than 2 w green home service clients on sweet atmosphere.

The lobby of Vienna hotel uses LK2000, which is directly placed by Green Ai. This equipment can meet the effect of 5000 cubic meters without grafting central air conditioning or fresh air system. It has a small fuel consumption, convenient maintenance and wide fragrance expansion area

The corridor of the hotel uses Green Love LK100 Space Small Overmaster aromatherapy machine, the area of incense expansion can reach 200 square meters, and the cost performance is very high.