The purpose of this paper is to provide a method of process reference to supply chain relationships in a downstream sector. It serves as a tool to analyze collaboration between entities in the supply chain strategy. The study is categorized into the case study research in Malaysian oil palm refineries. The data collection is accomplished through semi-structured interview using snowball sampling and observation by visiting four oil palm refineries based on selecting non probability sampling technique through purposive personal judgment. Most of downstream industries select produced end products with the aim of getting greater margins. Nevertheless, a process reference analyzes that the downstream industry distributes semi-finished products to the international market than producing end products in the local market. There are the effects of supply chain relationships between upstream and downstream. Furthermore, entities that have the high dependencies tend to follow the strategy of the dominant entities consequently network of business process driven by the strong entities. The result gives implication to leverage SCOR model for analyzing the supply chain relationships between entities. It can be applied to any industry that decide the effective collaboration with their supplier, distributor and buyer.