Using lumber industry by-products and under-utilized wood species once landfilled or burned as waste by forestry operators or sawmills, ARAUCO manufactures a variety of particleboard, medium density fibreboard (MDF) and FIBREX® thin high density MDF. ARAUCO's ability to service a broad range of market needs stems from a diverse range of technological capabilities.

With Sierra Pacific Industries’ acquisition of the Oregon-based Seneca companies, SPI is proud to be operating in California, Oregon, Washington and Wisconsin.