The abbreviation TMP wood chip stands for Thermo-Mechanical-Pulping wood chips. TMP wood chips are gained from bark free and fresh spruce or fir tree wood. During the TMP production process wood chips are heated and run through a refiner for defibration. The mechanical wood pulp resulting from this process serves as the basis for production of uncoated paper (e.g. paper for printing newspapers) or lightweight coated (LWC) papers (e.g. paper for printing magazines). TMP wood chips fulfill highest quality demands. Every load of TMP wood chips is analysed according to strict rules. In order to qualify as TMP wood chips, the wood has to meet requirements regarding size (fractioning), bark content, water content and freshness. When supplying TMP wood chips, the price is adjusted for bonus or malus based on quality variations.