关单 meaning in English

s/o shipping order

The development of flower industry has been listed into eighteen key biological resource programs by the provincial government . especially , camellias , rhododendrons , magnoliaceae and orchids have been given priority for exploitation and development
特殊情况下，对于进出口单证一时不能提供备的采取凭保函，用手填报关单的方式先验放货物，后补办有关进出口手续。