<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31319820</termId><termName>foaming agent</termName><termType>PT</termType><termNote><![CDATA[ Chemical additive that releases a gas to expand the material by forming closed bubbles; also used to cause a froth, as in detergent or fire-fighting foam. ]]></termNote><termCreatedDate>2026-03-30 20:26:11</termCreatedDate><relation><relationType>UF</relationType><termId>31319821</termId><termName>agent, foaming</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31305843</termId><termName>additive</termName><termType>PT</termType></relation></term>  </Zthes>