Can ‑ Trol Environmental Systems Ltd., located at 391 Steelcase Road W in Markham, Ontario, has been designing, manufacturing, installing, commissioning, and servicing turnkey controlled environmental chambers since 1989. They specialize in custom cleanrooms, cold rooms and freezers with precise temperature/humidity control (±0.2 °C), stability chambers, incubators, metabolic testing rooms, growth rooms, mortuary chambers and fire-rated cold ‑ room doors—all built to ISO ‑ 9000, CSA and electrical safety standards for industries like pharmaceuticals, biotechnology, healthcare, food sciences and research institutions . With over 30 years of excellence, Can ‑ Trol offers a proven full-service process—from feasibility and engineering through fabrication, HVAC/mechanical/electrical integration, automation, commissioning/validation, training, and 24/7 post-warranty support (). Their ISO ‑ certified, in ‑ house production facility and multidisciplinary team deliver robust, high-performance, and compliant solutions backed by extensive project experience and glowing endorsements from leading Canadian universities and pharmaceutical firms . For reliable, precision-controlled spaces tailored to exact specifications and ongoing support, contact them at 905 ‑ 415 ‑ 8141 or visit their Markham facility.