Supplymo research edition
Original research from the supply side
49 of 118 1688 baby-product detail API responses omitted shippingTimeGuarantee
We ran the same twelve baby-product searches twice through 1688's English cross-border API. The later after-sales snapshot produced 118 successful product-detail responses: 69 returned productShippingInfo.shippingTimeGuarantee and 49 omitted it. The earlier 120-row title-and-video snapshot remains a separate cohort.
It cannot establish what a rendered 1688 website, app, other API surface or supplier conversation contained. The study queried one product-detail API response per sampled result.
Liam Cai · Founder, Supplymo
Published 24 August 2026 · Collected 2026-08-13 · Yiwu, China
Evidence figure · Baby-product field visibility
49
of 118
shippingTimeGuarantee omitted
- Returned shipIn48Hours
- 67
- Returned shipIn24Hours
- 2
n = 118 product-detail API responses. Collected 2026-08-13. Non-random after-sales cohort: 12 deliberately selected baby-product searches with 118 successful product-detail API responses.
Collected
2026-08-13
Evidence
Version 1 · 238 rows across two separate cohorts
Sample status
Non-random · method and row unit stated
Reuse
CC BY 4.0 · 13 stated limits
Study reading
Field omission varied across the selected searches
The baby bottle search had 7 omissions among 10 successful product-detail responses. Teether and baby car seat each had 2 omissions among 10. These small splits describe this non-random draw only; they do not estimate the wider baby-goods market.
Among the 69 responses that contained the field, 67 returned shipIn48Hours and 2 returned shipIn24Hours. Those strings describe the returned API field, not international transit, customs clearance or delivery to the buyer.
Study reading
The two snapshots stay separate
The listing-quality snapshot produced 120 rows. The later after-sales snapshot produced 118 successful responses after 2 detail-call failures. Only 107 internal keyword-offer pairs overlapped, so title repetition and video observations cannot be attached to the later after-sales rows.
The public evidence labels every row by cohort and removes offer identifiers. Its 238 rows are not 238 distinct products or suppliers, and the study does not deduplicate by shop.
Study reading
How a buyer can close the response-level gap
When a sampled response omitted shippingTimeGuarantee, that data source could not answer the dispatch-timing question. Before payment, request a current written production and dispatch date tied to the exact product, variant, quantity and order terms.
Keep the API observation and the supplier confirmation as separate evidence. For baby products, also request product-specific material, age-use, test and destination-market documents where relevant. This study does not decide safety or compliance.
Research boundary
What this study cannot tell you
- BoundaryIt cannot establish what a rendered 1688 website, app, other API surface or supplier conversation contained. The study queried one product-detail API response per sampled result.
- BoundaryIt cannot establish seller intent or performance. An omitted key is an API-response observation, not evidence of a missed dispatch deadline or poor service.
- BoundaryThe 120-row listing-quality snapshot and 118-response after-sales snapshot are separate. Their measures must not be combined as if they describe one joined product set.
- BoundaryThe 46 numeric-zero refund-rate values are not interpreted as zero actual refunds. The direction check was inconclusive.
- BoundaryIt is not a baby-product safety or legal-compliance assessment. Materials, reports, standards, age grading and destination-market requirements were not inspected.
Questions readers ask
Read the finding without over-reading it
What is the one-line finding?
In a Supplymo sample of 118 successful product-detail API responses from 12 baby-product searches on 1688, 49 responses omitted productShippingInfo.shippingTimeGuarantee; 7 of 10 baby bottle responses omitted it, compared with 2 of 10 responses in each of the teether and baby car seat searches. This is a response-level field-presence result collected on 2026-08-13, not a finding about a rendered 1688 page, supplier terms or actual dispatch performance.
What does an omitted shippingTimeGuarantee key prove?
Only that productShippingInfo in the sampled product-detail API response did not contain shippingTimeGuarantee. It does not establish what a website, app, other API surface or supplier conversation contained.
Can the title and after-sales observations be combined?
No. The title and video measures use a 120-row listing-quality snapshot, while the dispatch and refund fields use a separate 118-response after-sales snapshot. Only 107 internal keyword-offer pairs overlapped.
Does a returned refund-rate value of zero mean no refunds occurred?
No such conclusion is supported. 46 responses returned numeric zero, but the direction check was inconclusive and the platform field's denominator and missing-data convention were not independently verified.
Does this study assess baby-product safety or compliance?
No. The sample did not inspect materials, test reports, standards, age grading or destination-market requirements. API-field presence and product safety are separate questions.