Tianjin: qhov chaw nruab nrab ntawm cov twj piston hnyav Tianjin yog ib lub nroog loj tshaj plaws hauv Suav teb thiab yog lub chaw rau kev lag luam thev naus laus zis xws li aviation, electronics, machinery, shipbuilding thiab chemicals. Ntawm ntau cov khoom tsim nyob rau hauv Tianjin, hnyav-duty piston twj sawv tawm thiab dhau los ua cov khoom tseem ceeb hauv ntau daim ntawv thov kev lag luam. Nyob rau hauv cov xov xwm no, peb yuav delve rau hauv lub ntiaj teb no ntawm heavy-duty piston twj, tshawb txog lawv lub peev xwm, kev siv, ib tug ...
Nyeem ntxiv 
