Iceberg, Bitzer.

1. Bingshan: a well-known central air-conditioning brand, a famous trademark in Liaoning Province, a famous trademark in Dalian City, a high-tech enterprise in Dalian City, and the largest refrigeration complete equipment export enterprise in China.

2. Bitzer: Europe's largest refrigeration and air-conditioning equipment manufacturer, with many core technologies in the refrigeration and air-conditioning industry.