What is the fine-grained topic of the following text: In an industry noted for healthy scepticism, and highly formalised regulation of both practice and product performance, I was amazed recently to be shown a promotional leaflet purporting to be a serious study comparing the thermal performance of factory-assembled composite claddings and site- assembled twin-skin systems, using thermal imaging or infra-red techniques. Only return the topic.
Comparison of thermal performance between factory-assembled composite claddings and site-assembled twin-skin systems using thermal imaging or infra-red techniques.