01
Who is the seller?
行动结论：付款前先确认商家主体可识别。
- 店铺名称与营业执照信息可对应
- 有公开的经营地址或联系方式
- 经营时长与评价可供参考
China public-record due diligence
试运行 · Pilot｜仅供参考，信息可能存在时效限制Know who you’re paying before you pay.
For people living outside mainland China: check whether a China-based seller can be identified, what to confirm before payment, and what evidence to save if something goes wrong.
Start a checkNot a shopping agent. We do not buy, ship, or hold goods or payment.
02
What must you confirm?
行动结论：关键交易条款确认后再付款。
- 发货时间与物流方式
- 退换货条件
- 商品规格与描述一致性
- 总价与付款方式
03
If something goes wrong
行动结论：证据现在就开始留存。
- 保存商品页面与宣传截图
- 保存聊天记录
- 保存付款凭证
- 记录完整时间线
A clear scope
Three steps. No guesswork.
- Share the listing. Provide the product link, seller name, price, and destination country.
- We screen the request. Excluded or unidentifiable requests stop before review.
- Receive a traceable result. A review states what was verified, what was not, and what to do before payment.
Email research
Bought from China—or stopped before paying?
We are collecting written feedback from US residents who bought, or seriously considered buying, an ordinary consumer product from a China-based online seller in the past 12 months.
About five minutes by email. No appointment or video call is needed. Do not send a product link, account details, payment information, full address, or identity documents.
Pilot thank-you:
- First 20 qualified complete replies: bilingual Buyer Evidence Checklist.
- First 10 of those replies: one limited-scope human Quick Check.
US residents age 18+; one reward per person; complete qualified replies are ranked by mailbox receipt time. Ordinary consumer products only. No cash value or transfer. The reward does not depend on positive feedback. A Quick Check is not a product certification, legal opinion, or guaranteed outcome.
Quick Check
Start a Quick Check.
The eligibility check runs in your browser. Nothing is stored on this website or sent unless you choose to open and send an email draft.
What this service does not do
Sima Pre-Purchase Check does not inspect physical goods, issue product certifications, arrange shipping, provide a customs ruling, guarantee a refund, or promise a legal outcome. A case-specific legal opinion or representation requires a conflict check and written law-firm engagement.