这是山东一家企业研制的轻量化挂车，采用新型铝合金材料制成的这种挂车自重和油耗都将大大降低（8月27日摄）。 8月28日，天津、河北、内蒙古、辽宁、吉林、黑龙江、山东七省（市、区）联合成立的环渤海湾甩挂运输联盟在烟台通过联盟标志和章程，标志着全国首个甩挂运输省级区域战略合作联盟正式起航。甩挂运输是指带有动力的牵引车将挂车甩留在目的地后，再接着拖带其他装满货物的挂车返回原地或驶向新的地点，是一种高效节能的货运方式，在欧美国家物流中占据主导地位。目前，我国甩挂运输仍处于起步发展阶段。作为我国三大经济区域之一的环渤海区域启动甩挂运输联盟，将给我国物流业节能降耗带来新的发展机遇。新华社记者 邓卫华 摄     This is a company in shandong province developed lightweight trailer，The new type aluminum alloy material made of this trailer self-respect and fuel consumption will be greatly reduced（August 27, perturbation）。 On August 28,，tianjin、hebei、Inner Mongolia、liaoning、jilin、heilongjiang、Shandong province seven（city、area）To set up a joint ring bohai bay jilt hang transport alliance in yantai through the league mark and articles of association，Marks the first left hanging transport provincial regional strategic cooperation union formally set sail。Left hanging transportation refers to the tractor trailer with power will be left at their destination，And then towing other goods filled with the trailer to return to in situ or to new location，Is a kind of high efficiency and energy saving freight way，In the European and American countries logistics the dominant。At present，Our country left hanging transportation is still in the early stages of development。As the three major economic region in China, one of the bohai sea area, start jilt hang transport union，Will give Chinese logistics industry energy consumption brings new opportunities for development。Xinhua news agency reporters DengWeiHua perturbation