STEJASA

(based on 1(a)) Maintenance of valves, expansion and dilation joints for use in the energy sector; (based on 44 (e)) maintenance and construction of valves, expansion and dilation joints for use in the energy sector

(based on l(a)) Product research, namely the study of valves and design of valves for use by others in the energy sector; (based on 44 (e)) product research, namely, the study of valves