express consignment meaning in English

快件货, 快达货

I want to mail the commodities purchased in china to us by express consignment , how about the procedures
我想将在中国购买的商品以快件的形式寄到美国去，如何办理手续？
The accs is a sophisticated computer system designed to interface with multi - cargo operators in providing air cargo clearance via electronic means with service availability of 24 hours a day and 7 days a week . the system covers clearance of all types of cargoes including perishable goods , general cargo , consolidation shipments , express consignments and even packages handled by on - board couriers
该系统是特别设计的精密电脑系统，与多个货运经营商建立电脑界面联系，以电子方式办理空运清关工作，每星期七日、每日24小时不停运作。该清关系统处理各式各样的货物，包括易毁消货物、一般货物、混装货物、特快货运以至由随机递送员携带的包裹。