Hanghai Jiezhou Engineering & Mechanism Co., Ltd. (yomwe tsopano ikutchedwa "DYNAMIC") ndi kampani yopanga zinthu za konkriti zapamwamba kwambiri padziko lonse lapansi zamakampani amisewu. Ili mumzinda wa Shanghai ku China, Dynamic idakhazikitsidwa kuyambira 1983 ndipo yakhala ikugwira ntchito zosiyanasiyana zomanga misewu m'dziko lonselo komanso kunja. DYNAMIC imachokera ku kapangidwe kake kaumunthu, malonda athu ali ndi mawonekedwe abwino, khalidwe lodalirika komanso magwiridwe antchito okhazikika omwe amakupangitsani kumva bwino komanso mosavuta panthawi yogwira ntchito. Avomerezedwa ndi ISO9001 Quality System ndi CE Safety System.