根据以下业务背景资料，回答相关问题。 广州华兴化工进出口公司2010年7月1日与香港KWANG YANG工业公司签订了购买PE RESIN（聚乙烯树脂）合同，内容如下： PURCHASE CONTRACT P/C NO. GZHX KYI-10-0010 Date: July 012010 Signed at: Guangzhou The Buyer: GUANGZHOU HUAXIN CHEMICAL IMP. & EXP. CO., LTD. Address: 151 DONGFENG ROAD,GUANGZHOU,CHINA The Seller: KWANG YANG INDUSTRY CO.,LTD. Address: RW 3A 15/F KWONG BLDG, 72 NARHAN ROAD, KLN, HONG KONG This Purchase Contract is made by and between the Seller and the Buyer whereby the seller grees to sell and the Buyer agrees to buy the under-mentioned goods according to the terms and onditions stipulated below：
1. Package: STANDARD EXPORT PACKAGE 2. Port of Shipment: LONDON 3. Port of Destination: FUTIAN BONDED AREA（福田保税区）, SHENZHEN, P.R.CHINA 4. Time of Shipment: IN JULY 5. Shipping Mark: N/M 6. Terms of Payment: BY T/T WITHIN THREE WORKING DAYS AFTER THE SHIPMENT DATE 7. Country of Origin: MADE IN U.S.A THE SELLER THE BUYER KWANG YANG INDUSTRY CO.,LTD. GUANGZHOU HUAXIN CHEMICAL IMP.& EXP.CO.LTD.
该批进口货物的原产地是哪里？外贸跟单员如何确认该产品的原产地？
