求翻译：20箱选择海运：RMB800.00，货到目的港的价钱：到客人仓库RMB2900.00起步计算，（30公里以内2900.00）这个费用包目的港清关，但不含关税，船期18-20日是什么意思？

20 boxes to select shipping: rmb800.00, the price of the goods to the port of destination: the guests warehouse rmb2900.00 start computing (less than 30 km 2900.00) This cost of the package destination port clearance, but excluding tariffs, shipping schedules, 18-20

seaborne: Select 20 chassis RMB 800.00 to the price of the port of destination, the guests start warehouse RMB 2900.00 30, 2900.00 km ) This fee packages Hong Kong clearance purposes, but it does not include customs duties, and shipping from 18 - 20

20 box of choice marine transportations: RMB800.00, delivery port of destination price: To visitor warehouse RMB2900.00 start computation, (in 30 kilometers 2900.00) this expense package of port of destination clear pass, but does not contain the customs duty, the sailing time 18-20 date

20 box select shipping: RMB800.00, the price of the goods to the port of destination: calculation of warehouse RMB2900.00 start to the guests, (within 30 kilometers of 2,900) the costs port clearance, but not including tariffs, schedules, 18-20 day

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