Autoventil AD (BELEX: AVEN) is a Serbian manufacturing company specializing in the engineering and production of precision engine components and valve train assemblies for internal combustion engines. Founded in 1957 and headquartered in Uzice, Serbia, the enterprise operates within the automotive parts manufacturing sector, serving both original equipment manufacturers (OEMs) and the global aftermarket. The company manufactures and supplies a comprehensive portfolio of powertrain parts, comprising internal combustion engine intake and exhaust valves, including bimetallic, sodium-cooled, nitrided, chrome-plated, and stellite-reinforced valves engineered for passenger cars, commercial freight trucks, agricultural tractors, locomotives, marine vessels, and heavy mining and civil engineering machinery; intake and exhaust valve guides manufactured from specialized pearlitic gray cast iron and wear-resistant brass alloys using automated computer numerical control (CNC) machining systems; valve train accessories and related mechanical fasteners, including valve tappets, tappet pushrods, spring retainers, rocker arms, and cylinder head screws; multi-grade abrasive grinding and lapping compounds, including oil-based valve grinding pastes for precision valve seating and engine reconditioning; and custom metal-machining and tooling services tailored to client-specific mechanical drawings and metallurgical standards. Autoventil AD serves automotive manufacturers, industrial engine rebuilders, and wholesale distributors across domestic channels and international export markets spanning more than 50 countries worldwide. In recent developments, the company has continued to modernize its manufacturing footprint through targeted investments in automated CNC machinery and enhanced precision quality-assurance systems to expand export capabilities and support demanding automotive standards, while maintaining active trading on the Open Market segment of the Belgrade Stock Exchange under the majority ownership of Goran Pijevic.