<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31374050</termId><termName>medium-density fiberboard</termName><termType>PT</termType><termNote><![CDATA[ Fiberboard that is typically made of wood fibers that are acquired by breaking down scrap remnants of hardwood or softwood; distinguished from low-density fiberboard and high-density fiberboard by density of fiber and strength. ]]></termNote><termCreatedDate>2026-03-30 20:40:52</termCreatedDate><relation><relationType>UF</relationType><termId>31374051</termId><termName>MDF</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31374052</termId><termName>medium density fibreboard</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31374053</termId><termName>fiberboard, medium-density</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31343857</termId><termName>fiber building board</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31374054</termId><termName>high-density fiberboard</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31374057</termId><termName>low-density fiberboard</termName><termType>PT</termType></relation></term>  </Zthes>