Overview
海鲸数聚 (etc4.com, often romanized Haijing Shuju) is a Chrome product-research and keyword extension for Alibaba.com, AliExpress, and Temu. It is not Keepa, and it is not an AI image studio. The listing copy covers competitor stats on a product page, industry-keyword mining, bulk export of hot items, rank checks, store leaderboards, and batch download of images and video. Chrome ID hjabfkleibokembaanbfokijppihffoc; third-party stores date it to 14 January 2024, version about 3.4.4.
The job is to stop copying titles and images into a spreadsheet from those three platforms. It does not replace 1688 sourcing, and it does not replace Temu’s own ads and order dashboards. No public price card showed up in this review; treat billing as unverified until you see it in-app.
The marketing site is flaky in some networks. If etc4.com fails to load, use the Chrome Web Store listing and the in-extension account screen. Ignore aggregator blurbs that describe this slug as a cutout / text-to-image app — that does not match the extension.
Core features and advantages
Product and competitor views
The extension claims live competitor metrics and “viral” traffic clues on the PDP. A typical Alibaba.com workflow is: open rival listings, inspect title structure, category, and image packs, then decide to follow or avoid a crowded attribute. Field definitions and refresh rates are not in a public white paper. Do not treat plugin numbers as audited GMV.
Keywords and batch rank
Keyword mining and batch rank checks target Alibaba.com search and AliExpress/Temu list position, not Amazon ABA. Useful once you already have a category and need tails plus rank watch on your own URLs. Coverage and cadence are unpublished — test with 20 live SKUs against what you see in the official seller back office.
Export and asset grab
Hot-item export, store boards, and image/video download save operator time. They are not a buying decision. You still own copyright and platform image-theft risk. Leaderboards are a traffic-structure hint; cloning the #1 store’s main image is how categories homogenize.
Supported platforms
Public copy stably names Alibaba.com, AliExpress, and Temu. There is no evidence of full Amazon, Shopee, or Shopify coverage. It is a Chrome extension plus an etc4.com login, not an ERP: no inventory or ads sync. Marketplace HTML changes can break it overnight, as with every page plugin.
Who it's for
- Small AliExpress / Alibaba.com / Temu teams who currently live in Excel for competitor titles and images.
- Research assistants who export first and then check patents, compliance, and supply by hand.
- Skip it if you are Amazon-only (SellerSprite / Keepa), if you need official unit-sales, or if you will not install a third-party extension on seller browsers.
Concrete use case: pick a Temu or AliExpress niche, export a week of hot titles, cluster attribute words yourself, then search 1688 by those attributes — instead of listing the export file’s row one.
Pricing and value
As of 2026-09-06 no citable public tariff was on the official site. Aggregators do not fill the gap. It may be freemium, credits, or an annual seat — all unverified. Do not confuse it with unrelated “Haijing AI” chat plans at CNY 39. Open etc4.com or the extension after login. If the domain is down, do not pay anyone claiming to be support in a chat group.
Community feedback
A third-party Chrome mirror shows about 4.8 stars on a handful of reviews and a claimed ~10k user count — too thin to matter. Reddit, Zhihu, and 雨果网 have no durable thread. Directory sites repeat the vendor blurb. Community signal is weak; only a hands-on trial answers whether it is worth paying for.
Competitive positioning
SellerSprite and Keepa are Amazon-native. Temu helpers, Shopdora, and TiChoo lean Temu/TikTok catalogs. Haijing Shuju’s niche is an Alibaba-family + Temu page plugin. Depth and brand awareness are smaller than Amazon incumbents. No public API docs. If Amazon is the P&L, this is not your first tool.
Alternatives
- Temu Product Selection Assistant — Temu-centric research.
- AliExpress Title Generator & Keyword Collector — lighter AliExpress title/keyword helper.
- SellerSprite — Amazon research, not the same Alibaba.com/Temu surface.
Limitations
No public pricing. Spotty site availability. Opaque metrics. Breaks when the host marketplace ships HTML. Image grabs create IP risk. Support paths are unclear. It is not a “global big-data OS.”
Verdict
Trial the extension if you live on Alibaba.com, AliExpress, or Temu and need on-page competitor teardown. Skip it for Amazon-first or audit-grade sales. Do not prepay an annual plan until you see the in-app bill.
Next step: find 「海鲸数聚」 in the Chrome Web Store or open etc4.com, run it on 20 live listings, then decide.
Data notes
Rechecked 2026-09-06 against extension copy, Chrome IDs in public mirrors, and Chinese directories; etc4.com did not load reliably in every environment. published (2024-03-15), monthlyVisits, domainRating, and authorityScore are catalog placeholders and unverified. Pricing, legal entity, and exact launch day are unverified (store records ~January 2024). Older Chinese meta that described AI cutout/art-generation was incorrect for this product.