Txoj kev nqa ceev ceev ntawm ib qho stacker crane yog ib qho tseem ceeb.

Txoj kev nqa ceev ceev ntawm ib qho stacker crane yog ib qho tseem ceeb. Nws siv siab dua - precision Motors thiab iav tshuab kom nqa cov khoom hnyav hnyav thiab raug rau qhov siab xav tau.