Located in the Huailai , Zhangjiakou, HOYINN (Huailai) Technology Industrial Campus is a hyperscale data center cluster based on renewable energy. The total power supply reaches 1 million KVA, and the PUE is less than 1.25. Through  "Green Data Ecosystem", the campus aims to create an internationally influential hyperscale zero carbon big data industrial campus with renewable energy, and develops a green digital economy ecosystem featuring data collection, data analysis and data value enhancement.

Beijing-Tibet Expressway Beijing-Chongli Expressway Baiyanggou Natural Scenic spot Nankou park Badaling Great Wall Changping District North Sixth Ring