2020年2月4日，美国贸易代表办公室（USTR）公布一份关税豁免清单，免除部分中国原产商品25%进口关税。

2018年9月24日，美国当局开始对价值2,000亿美元的中国原产商品加征10%关税，2019年5月份税率追加至25%，这部分商品包括大量农产品、化工品和机器零部件。

考虑到部分商品并非中国独产，原材料采购自美国和第三方国家，也不涉及“中国制造2025”战略及其他工业项目，豁免关税不对美国经济利益造成严重危害，美国贸易代表办公室决定对包括9种加工海产品在内的产品实施减税计划。

减税对象为美国东部时间2018年9月24日至2020年8月7日期间入境或出库的商品，美国海关与边境保护局将发布相关指导文件。

        减税海产品目录如下：

阿拉斯加鲽鱼（黄金鲽、岩鲽、平头鲽）与块冻Alaskan sole (yellowfin, rock or flathead), frozen in blocks, in cases with net weight of more than 4.5 kg (described in statistical reporting number 0304.83.5015)；

阿拉斯加鲽鱼鱼片 Sole fillets, individually frozen, each fillet weighing more than 50 g but less than 150 g (described in statistical reporting number 0304.83.5015；

阿拉斯加鲆鱼与块冻 Alaskan plaice, frozen in blocks, in cases each with net weight of more than 4.5 kg (described in statistical reporting number 0304.83.5020)；

冷冻箭齿鲽鱼片 Individually frozen fillets of flounder, including Arrowtooth Flounder (Atheresthes stomias) and Kamchatka Flounder (Atheresthes evermanni), each weighing 80 g or more but not exceeding 200 g (described in statistical reporting number 0304.83.5020)；

琵琶虾肉 Slipper lobster meat (Ibicus ciliatus), frozen, raw, whether whole or in pieces, put up for sale in bags each with a net weight of not more than 2.27 kg (described in statistical reporting number 0306.19.0061)；

帝王蟹肉与块冻 King crab meat, frozen in blocks each weighing at least 1 kg but not more than 1.2 kg, in airtight containers (described in statistical reporting number 1605.10.2010)；

雪蟹肉与块冻 Snow crab meat (C. opilio), frozen in blocks, in airtight containers each with net weight of not more than 1.2 kg (described in statistical reporting number 1605.10.2022)；

珍宝蟹肉与块冻 Dungeness crab meat, frozen in blocks, in airtight containers with net weight of not more than 1.2 kg (described in statistical reporting number 1605.10.2030)；

其他蟹肉与块冻 Crab meat (other than King crab, Snow crab, Dungeness or swimming crabs), frozen in blocks, in airtight containers with net weight of not more than 1.5 kg (described in statistical reporting number 1605.10.2090)

美国海洋与大气管理局（NOAA）统计，2018年美国从中国进口上述海产品进口总额超1亿美元，阿拉斯加鲽鱼和鲆鱼及块冻产品进口额分别为4,470万美元、3,750万美元。

附表