Established since the year 2008, Grunchem Tech Sdn Bhd (Formerly known as Rangkum  Jaya Resources Sdn Bhd) is a research and development (R&D) based private limited company that focuses in experimenting with new technologies involving components derived from the palm oil industry in Malaysia. Grunchem Tech Sdn Bhd also produce High-Tech material from natural based. The company is 100% Bumiputra owned.

The company main product is Epoxidised Palm Oil (GrunOil) for the use in the rubber and polymer industry. GrunOil is new alternative processing oil that comes from natural and sustainable recourses and a new range of green materials.

Start 2019, company have new products produce that is GrunFeed,  GrunCoat,  Nanosilica and Aerogel.o