This FAQ article answers ten core questions raised by cleanroom contractors, hospital infrastructure managers and food & pharmaceutical plant investors about selecting qualified MGO rock wool panel suppliers for 2026 clean factory projects. It covers key screening standards, differences between manufacturers and middlemen, advantages of local Foshan factories, sample service, rush production, construction technical support and customized panel solutions. As a local Foshan original manufacturer, SAMZOON has abundant South China cleanroom project cases, offers free samples, rush production and one-stop construction guidance to help clients avoid rework and pass project acceptance smoothly.