No Guangzhou Wanbao Group Co., Ltd. (a state-owned enterprise group reorganized by Guangzhou Municipal Government in July 2000) owns Guangzhou Wanbao Refrigerator Co., Ltd., Guangzhou Wanbao Household Appliances Sales Co., Ltd., Guangzhou Refrigerator Co., Ltd. and other 17 enterprises, and has deep-seated joint ventures or cooperative relations with multinational enterprise groups such as Panasonic, Panasonic, Hitachi, Mitsui & Co., Ltd. and General Electric of the United States. Ranked among the top 500 Chinese enterprises for seven consecutive years, and ranked 274th among the top 500 Chinese enterprises in 2007. It is one of the three major production groups in Guangzhou. Wanbao air conditioner adopts negative ion purification mode. Its filter screen can not only effectively filter dust, hair, particles and other substances in the air, but also inactivate miscellaneous bacteria in the dust, effectively block the growth of bacteria such as Escherichia coli and Staphylococcus aureus, keep the air conditioner clean, continuously output clean airflow for users, and protect users' health.