ELEMA S.K.
Mr. Podziadly Rynek Praski 7 98-200 Sieradz, ul. phone: e-mail: elema@elema.pl webpage: www.elema.pl
GP Concrete Engineering Kft.
Mr. Pándi 1182 Budapest Iparvasút utca 16. phone: e-mail: tpandi@beton.info.hu webpage: www.beton.info.hu
UBO Engineering B.V.
Mr. BregmannBanningstraat 3B3769 AA Soesterberg,phone: +31 346351774e-mail: info@ubo.nlwebpage: https://www.ubo.nl