Dongosolo lokwezera la 4-point frequency synchronous likugwiritsidwa ntchito pa 2000T box girder dontho lamtengo pa Kunming Puxuan Expressway.

Pulojekitiyi idasankha makina athu okweza ma frequency anayi osinthika, ma seti 12 a ma 400T ma hydraulic jacks akuluakulu okhala ndi sitiroko ya 300mm, matani apamwamba a mtengo wakugwa adafika 2100T, ndipo kutalika kwa mtengo wogwawo kudafika mamita 2.4 , kupanga mlatho wokweza ndi kugwa m'chigawo cha Yunnan. Ntchito yokwera kwambiri yamitengo ndi matani!