Merawex designs and manufactures guaranteed-power systems at Gliwice and is one of the few Polish producers with dedicated fire-alarm power supplies, a claim confirmed by four valid CNBOP-PIB świadectwa dopuszczenia: 5350/2024 and 5351/2024 for power supplies serving fire alarm and smoke control systems, and 6021/2026 and 6057/2026 for the ZUP-230V-BM range. The company states its products meet EN 54-4 and EN 12101-10. It also runs surface-mount and through-hole assembly, EMC testing and mechanical design as a contract-manufacturing arm. Its ISO certificates are held but are not the qualifying evidence.