求翻译：合同号： 28KG603 卖方：辽宁土畜产进出口公司买方：J. Brown & Co., 175 Queen’s Way, HongKong 商品 干薯片 规格 符合样品SP-03号， 水分最高16% 数量 1,000公吨（允许5%增减）单价 每公吨成本加运费香港185美元总额：185，000美元 （允许增减5%）交货期：1998年11月，不允许分批装运及转运付款条件：不可撤销的见单后90天付款的信用证，有效期为装运期后20天在大连到期。是什么意思？

Contract No.: 28KG603 seller: Import and Export Corporation, Liaoning Tuchu Chan buyer: J. Brown & Co., 175 Queen's Way, HongKong dry potato product specifications in line with the sample SP-03 number, the number of water up to 16% of 1,000 metric tons (allow 5% increase minus) price per tonne c

Contract number: 28 603 KG Seller: Liaoning and Buyer: animal by-products imp company Brown & Co J . . ' s, 175 Queen Way commodity dried potato, HongKong SP - 03 samples comply with specifications, the moisture up to 16% of volume allowed 1,000 tonnes ( 5% increase or decrease cost and freight)

Contract number: 28KG603 seller: Liaoning earth livestock product import-export company buyer: J. Brown & Co., 175 Queen' s Way, the HongKong commo

Contract number: 28KG603 seller: Liaoning animal byproducts import and export company buyer: J. Brown&Co., 175 Queen ' s Way, HongKong dry potato chip specifications of goods subject to sample SP-03 water up to 16% the number of 1,000 metric tons (allows 5% to increase or decrease) total price $