Txij li thaum tsim lub tuam txhab, Yantai Jiwei tau cog lus rau kev tsim khoom thiab R & D ntawm ntau yam txuas nrog rau hydraulic breaker rauj, ncej tsav tsheb, hydraulic grabs, hydraulic shear, ceev hitch, hydraulic phaj compactor, excavator ripper, pawg rauj, Hydraulic pulverizer, ntau hom excavator thoob, thiab lwm yam rau excavators thiab backhoe loaders thiab skid steer loaders kom tau raws li qhov xav tau ntawm cov cov neeg siv.