2. Chains are generally metal links or rings, which are mostly used for mechanical transmission and traction. A chain used to block traffic passages (such as on the street, at the entrance of a river or port), a chain used for mechanical transmission.
3. Platformization is to provide end-to-end quality experience and differentiated services on the basis of digital connection of the whole industrial chain, maintain operational efficiency and flexibility, and reduce transaction costs and friction costs of both supply and demand sides.
4. Systematization refers to the activity of classifying, sorting or processing normative documents or processes that have been formulated and promulgated in a certain way, so that they can be sorted in a centralized and systematic way and are easy to use.