1 Vaillant Vaillant (founded in Germany in 1874, one of the largest international heating groups in Europe, the top brand in the European heating industry, Vaillant (Beijing) Heating Equipment Co., Ltd.)

2 Squirrel (a famous trademark in Guangdong, a high-tech enterprise, one of the earliest domestic manufacturers of household wall-mounted boilers, Guangzhou Disen Household Boiler Manufacturing Co., Ltd.)

3BOSCH Bosch Thermal (founded in 1886 Germany, well-known brand, one of the largest gas boiler suppliers in Europe, industry influential brand, Bosch Thermal Technology (Beijing) Co., Ltd.)

40,000 and Vanward (listed company, high-tech enterprise, Famous trademark in Guangdong Province, leading gas appliance/domestic hot water system supplier, Guangdong Wanhe New Electric Co., Ltd.)

5BAXI (founded in the UK in 1866, the largest wall-mounted boiler in Europe One of the manufacturers, an influential brand in the wall-hung boiler industry, Xiderui Thermal Energy Technology (Tianjin) Co., Ltd.)

6ARISTON Ariston (founded in Italy in 1930, specializing in the production of heating and hot water products The world's leading enterprise, multinational company, Ariston Thermal Products (China) Co., Ltd.)

7Immergas (founded in Italy in 1964, the world's most advanced and largest condensing boiler manufacturer, Italy's leading Brand, Italy IMA Co., Ltd.)

8viessmann Viessmann (founded in 1917 in Germany, the industry's leading heating system manufacturer, one of the most influential well-known brands in the industry, Beijing Fei Sman Heating Technology Co., Ltd.)

9Ferroli (Founded in Germany in 1955, one of the main drafters of the standard for instant water heaters, the largest foreign-invested thermal energy enterprise, Feroli (Heshan) )Plumbing Equipment Co., Ltd.)

10BERETTA Beretta (in 1973, a major supplier in the heating field in China, one of the largest heating equipment manufacturers in Italy, Riello Thermal Equipment (Shanghai) Co., Ltd. )