Lianchi South Street, Lianchi District, Baoding City, Hebei Province. According to Baidu map, the dry ice factory in Lianchi District of Baoding City is called Baoding Sunshine Refrigeration Factory, which is located in Lianchi South Street, Lianchi District, Baoding City, Hebei Province. Dry ice is solid carbon dioxide, which is made by liquefying carbon dioxide into colorless liquid and then rapidly solidifying at low temperature.