The result form the case supply chain shows that both manufacturers in the rubber tire supply chain need improvement in many aspects. It can also indicate the hot spot which needs improvement. For the rubber block manufacturer, the focus of green improvement should be green procurement and green transportation and distribution. To improve green procurement practice of the rubber block manufacturer requires an improvement of
supplier proficiency which is transportation from the farmer. Though manufacturer receive the cup lump or raw rubber sheet from the farmers located near the factory, each farmer or collector has their own transportation and transportscup lump or raw rubber sheet to the factory individually without cooperation or planning with other farmers or collectors.