"Push type" means Make to Stock in which the production is not based on actual demand. "Pull type" means Make To Order in which the production is based on actual demand. In supply chain management, it is important to carry out processes halfway between push type and pull type or by a combination of push type and pull type. Supply Chain Management (SCM) is to create a solution i.e. "supply" for a goal or issue, i.e. "demand". Supply chain models of "Push type" and "Pull type" are opposite in terms of a demand and supply relationship. "Push type" is represented by "Make to Stock" (MTS) in which the production is not based on actual demand and "Pull type" is represented by "Make To Order" (MTO) in which the production is based on actual demand. At the point where "Pull type" starts to supply operations triggered by actual demand, it is like an elevator. An elevator starts when a button is pressed even if there is only one passenger. On the other hand, the "Push type" can be considered as an escalator. An escalator continues to supply (push) regardless of whether there is actual demand (passenger). In addition, "Push type" corresponds to a model for trains, buses, and airplanes for which supply (push) is based on demand forecast by time period and route. There may be various forms between "Push type" and "Pull type" depending on inventory forms of materials, work in progress (WIP), and finished items and how to deal with the actual demand in supply chain management.