The difference between supply chain partnership and traditional supplier relationship

I personally believe that first of all, we should understand the concept of supply chain: supply chain is not only suppliers and manufacturers, but also the existence of distributors, retailers, end customers, etc. are part of the supply chain, so first of all, from the object of the relationship, there is a quantitative difference between the traditional supplier relationship is mostly limited to the manufacturer and the supplier, the manufacturer and the distributor, retailers, is a kind of similar 1: The traditional supplier relationship is mostly limited to manufacturer-supplier, manufacturer-distributor-retailer, which is a relationship like 1:1, but the supply chain is 1:1:1, and sometimes N:1:N, that is to say, the supply chain can be considered as more than one enterprise cooperating with one enterprise.

Additionally, there is a difference from the period of cooperation, the traditional supply and demand relationship is not stable, it can be today and you cooperate, tomorrow I will cooperate with others, but the supply chain is different, is a virtual organization, cooperation is built on a long-term relationship, therefore, if the supplier makes a shoddy product, the manufacturer can be a long time at any time to give the sanction, so the supplier is generally not dare to mess up; unlike the traditional supply chain, the supplier thinks that I will do it tomorrow anyway, but the supply chain is not the same. Unlike traditional supply chain, suppliers think that I will not cooperate with them tomorrow, so why should I give you good goods today? Therefore, supply chain is more conducive to the stability and development of the cooperative relationship in terms of stabilization. This is the main difference between supply chain and previous supplier relationship. My PhD is in the direction of supply chain research, so I'll give you the answer in a layman's way, if there is a deeper discussion, feel free to reply to me.