本文件确定了分级木块的燃料质量等级和规格。本文件仅涵盖下列原料生产的木质型煤（见ISO 17225？1:2021，表1）: 1.1森林、种植园和其他原始木材 1.2木材加工行业的副产品和残留物 1.3.1未经化学处理的旧木材 注:经热处理的生物质型煤（例如经燃烧的型煤）不包括在本文件的范围内。

This document determines the fuel quality classes and specifications of graded wood briquettes. This document covers only wood briquettes produced from the following raw materials (see ISO 17225？1: 2021, Table 1): 1.1 Forest, plantation and other virgin wood 1.2 By-products and residues from wood processing industry 1.3.1 Chemically untreated used wood NOTE Thermally treated biomass briquettes (e.g. torrefied briquettes) are not included in the scope of this document.