This practical step‑by‑step guide covers site survey, old panel removal, steel‑structure pretreatment, PU sandwich panel selection, installation, acceptance and post‑operation maintenance for old factory reconstruction and cold‑storage renovation projects. It helps engineering teams avoid common retrofit risks. SAMZOON, Foshan local source manufacturer, provides customized PU sandwich panel, fast‑track production, free samples and full‑set construction technical guidance for South‑China retrofit projects.

This FAQ explains why PU sandwich panel is widely preferred for old factory reconstruction and outdated cold‑storage renovation. It covers old panel failure analysis, PU sandwich panel performance advantages, cost considerations and on‑site pitfalls for renovation projects. SAMZOON, Foshan local manufacturer, supplies customized PU sandwich panel, free samples and full technical support for South‑China renovation projects.