ISO INTERNATIONAL STANDARD 17225-4 Secondedition 2021-02 Solid biofuels Fuel specifications and classes Part 4: Graded wood chips Biocombustibles solides - Classes et specifications des combustibles- Partie4:Classes de plaquettes de bois Reference number ISO17225-4:2021(E) [so @ ISO 2021 IS0 17225-4:2021(E) 1 COPYRIGHTPROTECTEDDOCUMENT IS02021 All rights reserved. Unless otherwise specified, or required in the context of its implementation,no part of this publication may be reproduced or utilized otherwise in any form or by anymeans, electronic or mechanical, including photocopying, or posting below or ISo's member body in the country of the requester. ISO copyright office CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +4122 749 01 11 Email:copyright@iso.org Website: www.iso.org Published in Switzerland ii @ IS0 2021 - All rights reserved