<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31299324</termId><termName>Delrin (TM)</termName><termType>PT</termType><termNote><![CDATA[ Trademark for a series of extremely tough and stiff acetal homopolymer resins manufactured by DuPont and used in injection molded parts. ]]></termNote><termCreatedDate>2026-03-30 20:20:18</termCreatedDate><relation><relationType>BT</relationType><termId>31297611</termId><termName>brand name materials</termName><termType>PT</termType></relation></term>  </Zthes>