Kuafu is Mingxin's China export tax-refund and compliance service for 9610, 9710, 9810 and 0110 filings, not an EU VAT agent.

卖家参谋 is a VAT and EPR agency for AliExpress and Amazon sellers who need European tax numbers, filings, and packaging compliance.

Shangyi (SINY) handles EU VAT, WEEE/EPR, and overseas company setup for sellers, with a self-serve filing tool and Amazon SPN listing.

Shenzhen SIST’s TBT portal for export certification and WTO alerts is unreachable at tbt.sist.org.cn, so sellers should use institute contacts instead.