The era of digitalization with "data as the main production material" is coming. We are in the process of migrating from the physical world to the digital world. With less than 10% of digitalization process for the current generation， everything will become be recorded， preserved and become digital assets in the future. Big data is divided into cold, warm and hot data. Our company focuses on the storage of cold data. Based on the characteristics of cold data, we provide business users with low-cost, large-capacity, and highly reliable cloud platform.