Hwm honed leeges & Piston Qws Chaw tsim tshuaj paus Raws li cov tuam txhab kev tsim tawm hauv Suav nrog ntau dua 30 xyoo ntawm kev tshaj lij kev tsim khoom, peb muaj cov pas nrig piston, engineered kom tau raws li cov qauv kev muaj ntiaj teb.