F.lli Della Marca S.r.l. (operating under the brand FDM – Environment Makers) is an Italian manufacturer of climatic chambers and environmental testing instruments, founded in 1949. Headquartered in Rome with operations in Pomezia, the company represents three generations of specialized refrigeration and environmental control engineering.
FDM designs and builds environmental simulation chambers engineered to support demanding testing standards across electronics, automotive, aerospace, defense, and material sciences, including IEC 60068, MIL-STD-810, and ISO 16750.
Its product portfolio covers climatic stress screening, thermal cycling, and specialized accelerated testing systems tailored for Highly Accelerated Life Testing (HALT) and Highly Accelerated Stress Screening (HASS) workflows.