DHL: http://www.cn.dhl.com/zh/express/shipping/shipping_advice/express_fuel_surcharge_apem.html
UPS: https://www.ups.com/content/cn/zh/shipping/cost/zones/fuel_surcharge.html
FedEx: http://www.fedex.com/cn/rates/dfs.html
TNT: https://www.tnt.com/express/zh_cn/site/how-to/understand-fuel-surcharges-east-asia-middle-east-africa-greater-china.html
中国海关编码查询：www.hsbianma.com/
香港海关编码查询：https://www.censtatd.gov.hk/trader/hscode/index_tc.jsp
