_:n88d1ee7b38504cd0af0300f89d9862e4xb2
<http://schema.org/valueRequired>
"true"^^<http://www.w3.org/2001/XMLSchema#boolean>
<https://infrapanel-futes.hu/nl/waarom-infrarood-hout-beter-is-dan-traditionele-houtsystemen/>