American Wood Protection Association (AWPA)
Associação Brasileira de Preservadores de Madeira
Australia - Wood Solutions
Australia - Forest & Wood Products (FWPA)
British Wood Preserving and Damp-proofing Association (BWPDA)
Canadian Wood Preservation Association (CWPA)
European Wood Preservative Manufacturers Group
International Biodeterioration Research Group (IBRG)
International Research Group on Wood Protection (IRG)
Japan Wood Protection Association (JWPA)
New Zealand Timber Preservation Council
NZ - Farm Forestry New Zealand
Nordic Wood Preservation Council (NWPC)
South African Wood Preservers Association (SAWPA)
Swedish Wood Preservation Association
Timber Preservers Association of Australia
Treated Wood Council (USA)
VHN The Dutch Wood Preservers' Association
Western Wood Preservers Institute
WEI - European Institute for Wood Preservation
Wood Preservation Canada
WPA Wood Protection Association (UK)