⛸️Ice making at the National Speed Skating Oval completed on Monday
♻️The ice-making team uses carbon dioxide refrigeration system for a big venue like #IceRibbon for the 1⃣st time in worldwide, which is not only innovative but also sustainable.#Beijing2022 @ISU_Speed pic.twitter.com/McJAJNDjyh

— CGTN Sports Scene (@CGTNSportsScene) January 25, 2022