There are three mills in Bintulu that process wood-waste products. Two are Medium-density fibreboard (MDF) plants and the third is a charcoal briquette plant, with a total installed capacity of per year. MDF plants utilise wood waste purchased from sawmills and plywood mills in the Bintulu area and occasionally from the Tanjung Manis timber processing zone located at the mouth of the Rajang River. Synthetic resins, which are required to hold wood dust together, constituted 20% of the total production cost of the wood panel products. MDF plants in Bintulu are operated by Daiken Sarawak Sdn Bhd, which was founded on 15 February 1994. The briquette plant is operated by Cipta Briquette Sdn Bhd. A glue/adhesive factory in Bintulu is owned by Bintulu Adhesive & Chemicals Sdn Bhd. It produces urea formaldehyde resin and phenol formaldehyde resin for plywood and chipboard manufacturing at Kemena Industrial Estate. Urea precondensate is also produced to supply ASEAN Bintulu Fertiliser plant.