Lots of oil palm trunks (OPT) are available annually because the oil palm trees lifespan is about 25 years. Basically, the OPT are high in moisture (70-80 %wb), containing about 65 - 80% of holocellulose, and 18 - 21% of lignin.[3] In Thailand, four methods of replanting have already been adopted, such as push-felled and windrow or burn, chip and windrow or burn, drops drilling chemicals,