# Coupang product-sourcing assistant: the company behind a Temu plugin with 100k users copied the same model to Korea. Three months in, 742 users · Chrome extension

> Source: https://stringers.io/en/ext/chrome_eclibmbkfcgmonnpjfohlabehlggikib.html (Stringers / 什么值得做, generated 2026-11-08)
> Stringers answers one question every day: what small product can one or two people build in a few months and actually make money from. Numbers come from 15 databases we collect daily, each with source and date.
> For agents: these verdicts and the underlying databases (verified revenue, App Store / Google Play charts, ad libraries, GitHub, Product Hunt…) are queryable live over MCP — tools today / hot / products / directions / direction / data. Setup: https://github.com/komako-workshop/stringers (the user logs in at stringers.io → "配置 agent" to get a personal URL). Site index: https://stringers.io/llms.txt

> Jijingyun copied the model that worked on Temu (100k users), namely "free plugin + seller groups + paid parent platform," directly onto Coupang. It coincided with Coupang lowering barriers to recruit Chinese sellers, while Chinese-language tools were still missing. But the pool is small and growth is slow.

[Chrome extension](https://stringers.io/en/ext/index.md) · written 11-6

Coupang Product Sourcing Assistant - Free Coupang product research and data analysis · coupangshuju.com

# Coupang product-sourcing assistant: the company behind a Temu plugin with 100k users copied the same model to Korea. Three months in, 742 users

**What it is** A free Chinese-language Chrome extension that helps Chinese sellers running shops on Korea's Coupang check sales and prices and search 1688 suppliers by image. Revenue comes from the data membership of its parent platform, Jiyu Cloud.

**Why it took off** Jijingyun copied the model that worked on Temu (100k users) as-is to Coupang: free plugin + seller group + paid parent platform. It also landed as Coupang lowered its barriers to attract Chinese sellers, and Chinese-language tools were still empty. But the pool is small, so growth is slow.

**C** **How you could follow it** Don't build a Coupang plugin on its own. Learn its pipeline: watch which platform is recruiting Chinese sellers, and grab the "X product-sourcing plugin" keyword before a Chinese-language tool shows up. If you do go after Coupang, build the parts it hasn't: Korean localization and profit calculation.

C grade: a clear model worth learning from, but the Coupang Chinese-seller pool is small. The top Chinese-language plugin has only 742 users after three months, and it's run by a company with a database and ten sibling plugins funneling users to it, so a solo follower wouldn't get much. Few people know about it yet

713 users

Coupang Product Research Assistant is a free Chinese-language Chrome extension that helps Chinese sellers on Korea's Coupang check sales and prices and find sourcing by image search 1688. It launched in August and had 742 users by Nov 6, with zero ratings. It hasn't broken out. What's worth watching is the company behind it: it has copied the same playbook more than ten times, and wherever a platform is recruiting Chinese sellers, it builds one there.

### A store description stuffed with competitors' names

On August 9 2026 at 12:06 noon, Qingdao-based Jijingyun listed "Coupang Product Sourcing Assistant - Free Coupang product research and data analysis" on the Chrome Web Store. The first line of the description reads "[Free forever] Coupang product research and data analysis tool," followed by four features, each ending with a rival's name:

> Daily/weekly/monthly/total sales lookup... similar to Coupkey. Listing date and sales trend lookup... similar to Kupu Assistant. Built-in image search for same-product suppliers on 1688 in one click... similar to Kusoubao. Built-in main image downloader... similar to Kumai Assistant.

This isn't describing a product; it's grabbing search terms. Any seller who searches for one of these rivals' names has a chance of landing here.

Its site, www.coupangshuju.com, opens to a "Hot products" chart (11-06). The top item is Nongshim Shin Ramyun 120g. Each row shows sales, ratings, and a "Rocket Delivery" tag, plus a "Find same product by image" button. The store lists the URL without www as coupangshuju.com, and that address just returns a single line: "Internal system error." 11-06

### Whose it is, and why that matters

| Jijingyun's plugins | Launched | users |
|---|---|---|
| Temu product-sourcing assistant | 2023-11 | 100k, 3.8 points |
| Shein product-sourcing assistant | 2024-06 | 50k |
| Shopee product-sourcing assistant | 2023-06 | 20k |
| Amazon product-sourcing assistant | 2025-02 | 8000 |
| AliExpress / TikTok | 2025-07 / 2025-09 | Each 3000 |
| Mercado Libre | 2026-03 | 2000 |
| **Coupang** | **2026-08** | **742** |
| Ozon | 2026-09 | 185 |

Data from the Chrome Web Store and extops.dev, 11-06. extops.dev shows this developer has 11 plugins in total, with about 200k users combined.

One naming format ("X product-sourcing assistant - Free X product research and data analysis"), one domain format (platform pinyin + shuju.com), and the same feature set. Swap the data source and the name, and you have a new plugin. The footers of each site link to each other, all pointing back to the parent platform, Jijingyun (geekbi.com). The parent's website claims "500k cross-border sellers, #1 market share for Temu/Shein product tools." That's self-reported and unverified.

So the Coupang version isn't a standalone product built by one person. It's a new opening on an assembly line. Its 742 users come less from features that beat rivals and more from the fact that sellers on Temu and Shein already know the brand.

### How users grew

extops.dev's curve: Sep 1 285 users, Sep 25 477, Oct 8 or 477, then kept climbing, Nov 1 713, Nov 6 742. In the last 30 days it added 252 users, roughly seven or eight a day. No single day jumps out, so there's no sign of paid acquisition or a chart push. It looks more like organic installs from long-tail search (inferred).

Here are the visible sources of users:

- **Search terms.** The title is packed with "Coupang product sourcing," "free," and "data analysis," and the description name-checks four rivals. Search "Coupang product sourcing plugin" and its Chrome and Edge pages rank near the top.

- **Cross-promotion within the brand.** Sellers already using the Temu and Shein versions install this one too.

- **Seller WeChat groups.** The homepage and download page carry a "scan to join the seller group" QR code. People get pulled into the group first, then funneled to the parent platform's paid membership.

- **Coupon and affiliate sites.** The third-party site maijia51.com hosts geekbi links with referral codes and a discount code, VIP008. This is at the parent-company level; there's no direct evidence for the Coupang line.

No one on X, in media, or in ads was found mentioning it.

### Why Coupang, and why now

Over the past two years Coupang has been aggressively recruiting Chinese sellers. In September 2025 it launched "fast store opening": Chinese companies don't need to register a Korean company and can open a local store in as little as 1 days (Yibang Dongli, 2025-09-01). According to China Daily's 2026-07 report, this step used to take 30 to 45 working days. In 2026 it also held roadshow recruitment events in Shenzhen and other cities, offering new sellers 90 days of cold-start traffic support.

Chinese sellers are still few on Coupang. Citing Chinanews, 2025-09 data shows that as of Q2 2025, Chinese sellers made up only a single-digit share on Coupang, versus more than half on Amazon. Newcomers can't read Korean, local tools are hard to use, and Chinese tutorials still point to the Korean-language itemscout and the 2022 Geek Selection tool. That's when Jiwhale brought its plugin over.

### Where the money comes from

The plugin doesn't charge, the store listing shows no in-app purchases, and the site says free forever. The money is in the parent platform: the VIP membership of Jijingyun Data and its open-platform API ("pay only for successful calls"). VIP pricing requires logging in to see. How much paid revenue the Coupang line brings in can't be found from outside. With 742 users, even good conversion wouldn't support a standalone revenue line (inference). Its value to Jijingyun is holding a keyword and adding one more entry point to the portfolio.

### Who it's competing with

| Competitors | Scale | How it differs |
|---|---|---|
| 아이템스카우트 itemscout | 300k users, with in-app purchases | Korean sellers' standard tool, focused on Naver and Coupang keyword traffic, in Korean, subscription-based |
| SMART DATA(루비데이터랩) | Two plugins, 30k + 10k | In Korean, works with Naver Smart Store and Coupang together |
| 이커머스 AI 솔루션 | 10k, 4.8 points | In Korean, uses AI to analyze sales and reviews |
| AliPrice 쿠팡 쇼핑 도우미 | 6000,213 ratings | Image search for suppliers and price comparison, buyer-oriented |
| Kexue Assistant / KOO AI | 226 | In Chinese, also targets Chinese sellers, launched 2026-06 earlier than this one, with added AI product research, profit calculation, and title optimization |
| Kumai Assistant, Jike Data | 100–200 | A small Chinese-language plugin, nothing clear about what they're building |
| Coupkey, Geek Selection | Web, scale unverified | Chinese-language; Coupkey also sells operations outsourcing, Geek Selection later pivoted to ERP |

The Korean-language tools are two orders of magnitude bigger. The Chinese plugin cluster sits entirely under 1000 users, and this one ranks first. The "Chinese + Coupang" niche really is empty, but most of the reason it's empty is that the pond is small: in one country, Korea, Chinese sellers are a single-digit share.

### If it were you

**C: Learn the playbook, but Coupang isn't worth going after on its own.** After three months, 742 people, and that's the volume for the top Chinese plugin; the best-run player is still a company with a database, a brand, and ten sibling plugins funneling users in. A solo dev starting from zero first has to solve where Coupang sales data comes from, and then they're splitting these few hundred users.

**Who it's for:** small teams that already have an e-commerce data-scraping setup and have shipped one platform plugin, looking to reuse the same code for more entry points; or people running cross-border seller communities with WeChat groups already in hand.

**Who it's not for:** indie devs hoping to earn from a Coupang plugin alone. Also not for anyone wanting to go head-to-head with Korean sellers, where itemscout alone has 300k users.

**How to do it:**

- Copy the pipeline, not this one product: one plugin per platform, one pinyin domain, one WeChat group, money collected at the parent platform. Once one platform works (Temu 100k), the next is just swapping the data source and the name.

- Watch platform recruitment news to pick platforms. When a marketplace holds recruitment events in China, pushes "fast store opening," or offers traffic support to new sellers, grab the "X product-selection plugin" keyword before Chinese tools show up. Coupang's term is taken, Ozon has Jiqing Cloud September just launched, and Mercado Libre has only 2000 people.

- If you do go after Coupang, build what it hasn't covered: Korean-language localization of titles and detail pages, Korean certification and return rules, and logistics and profit modeling for shipping into Korea. These are where new sellers who can't read Korean get stuck daily. Jiqing Cloud's "check sales + find suppliers" model doesn't cover this, and Keyue is moving that way but only has 226 people.

**How it gets users:** store titles and descriptions stuffed with platform names, "free," "selection," and competitor names; get listed in ERP and fingerprint-browser plugin marketplaces (Jiqing Cloud's Temu version is on the Ziniao ecosystem hub, and its official site links to Miaoshou ERP and Ziniao browser); drop QR codes in recruitment events and service providers' seller groups.

**When to get in before:** the half-year when platform recruitment is hottest. As new sellers arrive in waves, they search "X product-selection plugin"; once tutorials all name a particular tool, the term is locked up.

**What would show you got it wrong:** ① The Coupang version passes 5000 users before 2027 early next year, or starts getting ratings and updates, meaning Chinese sellers are flooding into Coupang faster than expected and the niche deserves a second look; ② Keyue-style Chinese tools that do "localization + profit modeling" grow faster, meaning new sellers want not sales data but "how to actually sell in Korea"; ③ Conversely, if it's still around a thousand users and unupdated next year, the Chinese seller pool on Coupang is just this size, and even companies with a matrix behind them treat it as a long tail.

[Chrome store page ↗](https://chromewebstore.google.com/detail/coupang%E9%80%89%E5%93%81%E5%8A%A9%E6%89%8B-%E5%85%8D%E8%B4%B9coupang%E9%80%89%E5%93%81%E4%B8%8E%E6%95%B0/eclibmbkfcgmonnpjfohlabehlggikib)

**Research notes: competitor table, acquisition evidence, full research report**

Competitors

| Name | Where | Launched | Scale | How it differs from this one |
|---|---|---|---|---|
| 아이템스카우트 itemscout | Chrome | 2019-11 | 300k users, with in-app purchases | Korean-language, aimed at Korean local sellers, focused on keyword traffic; it's Chinese-language and free, leaning toward supplier sourcing |
| SMART DATA 스마트데이터(루비데이터랩) | Chrome | 2022-06 | 30k + 10k (two extensions) | Korean-language, covers both Naver and Coupang; Coupang-only, aimed at Chinese sellers |
| 이커머스 AI 솔루션 | Chrome | 2024-10 | 10k users | Korean-language, focused on AI analysis of sales and reviews |
| 쿠팡 쇼핑 도우미(AliPrice) | Chrome | 2022-01 | 6000 users | Does price comparison and image-search sourcing, not seller sales data |
| Geek Selection (Sellerwell) | Web | About 2022 | Not verified | An early Chinese-language Coupang product-selection site, free plus paid; later its main business moved to ERP |
| Kexue Assistant / KOO AI | Chrome | 2026-06 | 226 users | Also Chinese-language and aimed at Chinese sellers, but emphasizes AI selection and profit modeling, with paid perks after login; no large platform matrix behind it |
| Coupkey | Web | Not verified | Not verified | Chinese-language; besides data, also sells outsourcing and consulting |

Where users come from

- **Confirmed** **Same-company plugin matrix cross-linking and reusing the brand** : Jiqing Cloud has same-named format plugins on Temu 100k, Shein 50k, Shopee 20k, Amazon 8000, and other platforms; site footers and open.geekbi.com link to each other (chromestore library, geekbi official site)

- Inferred **Store search / SEO** : titles stuffed with "Coupang selection," "free," "data analysis"; when searching "Coupang selection plugin," its Chrome / Edge pages rank in the top few; growth curve is smooth

- **Confirmed** **Seller WeChat groups** : the coupangshuju.com homepage and download page both show a "scan to join the seller group" QR code

- Inferred **Affiliate referral codes** : maijia51.com carries geekbi referral links with ?s= and discount code VIP008 (confirmed at the parent-company level; no direct evidence for the Coupang line)

- Inferred **Timing driven by platform recruitment** : Coupang 2025-09 launched fast store opening (ebrun), and 2026 held roadshow recruitment events in Shenzhen and other cities (Sohu)

## Coupang Selection Assistant (Jiqing Cloud): why it's able to run

> Chrome extension `eclibmbkfcgmonnpjfohlabehlggikib`, released 2026-08-09, published by Jiqing Cloud (Qingdao Jiqing Network Technology Co., Ltd.), official site coupangshuju.com. Research date 2026-11-06.

### Bottom line

It hasn't really taken off yet: 3 months, 742 users, zero ratings. It's getting recalled because the curve keeps climbing steadily (about +7 users a day). The steadiness comes from the company behind it, Jiqing Cloud: the same template of "permanently free plugin + web data lookup + seller WeChat groups → paid Jiqing Cloud data membership / API" already works on Temu (100k users), Shein (50k), and Shopee (20k). This one is copied over as-is to Coupang, riding Coupang's big push to recruit Chinese sellers in 2025–2026. The differentiation is weak; it comes down to three things: Chinese-language, free, and one account for all platforms. What actually brings users is the company's matrix and brand, not the product itself.

### 1. Data: how many people, really

| Timeline | Users | Source |
|---|---|---|
| 2026-09-01 | 285 | extops.dev curve |
| 2026-09-25 | 477 | extops.dev |
| 2026-10-08 | 477 | extops.dev |
| 2026-11-01 | 713 | Our chromestore library (snapshot of the related card) |
| 2026-11-06 | 742 | extops.dev (30 days +252) |

- From early September to early November, about +7 users a day on average, growing a bit faster in October than September. No single day jumps sharply, so there's no sign of paid acquisition or chart-pushing; it looks like organic installs (the extops.dev curve has 38 readings in total).

- 0 ratings, version 1.0.2, store last updated 2026-08-21 (extops.dev). Not updated in over 2 months since launch.

- Also listed on the Edge store (microsoftedge.microsoft.com/addons/detail/beijnmomnaalgmafgegnddgaioponlno).

- No monetization signal: the store doesn't flag in-app purchases, and the official homepage says "This site is permanently free, no fees required" (coupangshuju.com). The money sits on the parent platform geekbi.com's VIP page, which requires login; the third-party referral site maijia51.com says "basic features free, paid version... discount code VIP008."

### 2. Competitors

| Product | Where | Launched | Scale | How it differs |
|---|---|---|---|---|
| 아이템스카우트 itemscout | Chrome / web / App | 2019-11 | 300k users, store marks in-app purchases (chromestore library) | The standard tool for Korean local sellers, focused on Naver / Coupang keyword traffic; Korean-language UI, paid subscription. Chinese tutorials (Leiguo, AMZ123) all recommend it |
| 스마트스토어 쿠팡 분석 SMART DATA(루비데이터랩) | Chrome | 2022-06 / 2023-05, two of them | 30k + 10k | Korean-language, covers both Naver Smart Store and Coupang sales analysis |
| 이커머스 AI 솔루션(네이버·쿠팡·카페24) | Chrome | 2024-10 | 10k, 4.8 points | Korean-language, focused on AI analysis of sales and reviews |
| 쿠팡 쇼핑 도우미(AliPrice) | Chrome | 2022-01 | 6000,213 ratings | Does image-search sourcing and price comparison, aimed at buyers / procurement, not sales data |
| Geek Selection (Sellerwell) | Web | About 2022 | Unverified; Chinese media has recommended it since 2022 | An early Chinese-language tool built only for Coupang, free plus paid; Sellerwell later moved to ERP |
| Coupkey | Web + browser extension | Not verified | Not verified | Chinese-language; besides data, also sells outsourcing and consulting services |
| Keyue Assistant / Keyue KOO AI (kooai.top) | Chrome + web | 2026-06-16 | 226 users (chromestore library) | Chinese-language, also aimed at China-based Coupang sellers; emphasizes AI selection, profit modeling, and title optimization, with paid perks after login; its timing and positioning are the closest match to this one, and it's even smaller in scale |
| Kumai Assistant / Jike Data | Chrome | 2025 | 147 / 248 users | A small Chinese-language plugin with a similar positioning, nothing clear about what they're building |
| Plugin marketplaces of ERPs / browsers like Ziniao and Miaoshou | Other | — | — | Sellers do their daily work inside these tools; Jiqing Cloud's official site lists Miaoshou ERP and Ziniao browser as friendly links, and its Temu selection assistant is also on the Ziniao ecosystem hub |

Bottom line: Korean local tools are mature, with user bases two orders of magnitude bigger, but they're all Korean-language. Chinese plugins built specifically for Chinese Coupang sellers are still very small on Chrome (all under 1000 users), and this one ranks first in that small group. So "Chinese + Coupang" is indeed still open, but part of the reason is that the market itself is small.

### 3. Growth tactics (where users come from)

1. **Copy the matrix, with sites funneling users to each other (confirmed).** Jiqing Cloud runs an "X Selection Assistant - Free X product selection and data analysis" on every platform: Temu (2023-11.1M), Shein (2024-650k), Shopee (2023-620k), Amazon (2025-02,8000), AliExpress (2025-07,3000), TikTok (2025-09,3000), Mercado Libre (2026-03,2000), Coupang (2026-08,742), Ozon (2026-09,185), plus AliSold (10k) (chromestore library). Each site's footer and open.geekbi.com link to each other. The names, descriptions, and official domains (<platform pinyin>shuju.com) all follow the same format.

2. **Store search / SEO grab (confirmed; the effect is inferred).** The titles pack in the keywords "Coupang selection," "free," and "data analysis." On Jina, searching "Coupang selection plugin" or "Jiqing Cloud Coupang" puts its Chrome and Edge pages in the top few results. A smooth daily +7 curve also fits organic volume from long-tail search.

3. **Seller WeChat groups (confirmed).** The official homepage and download page both carry a WeChat QR code reading "scan to join the seller group"; once people are in the group, they're directed to paid Jiqing Cloud data.

4. **Distribution / discount codes (confirmed at the parent-company level; no evidence for Coupang).** The referral site maijia51.com carries geekbi links with `?s=` referral codes and the discount code VIP008.

5. **Timing off platform recruitment (inferred).** 2025-09 Coupang launched "fast store opening": Chinese companies can open a local store in as little as 1 days (ebrun.com 2025-09-01); in 2026 it held "all-category seller roadshow" recruitment events in Shenzhen and other cities, plus a new-seller onboarding launch meeting (Sohu, egainnews); there's also the Rocket Growth plan, giving new sellers 90 days of cold-start traffic support (Jijia Sellfox). As new sellers flood in, they search "Coupang selection plugin."

6. **Not found:** Nothing on X (x-radar, last 90 days), in media coverage, or in ads. There's a Douyin video titled "Coupang plugin for data" (account "Coupang选品运营工具"); not sure if it's Jijingyun's account.

### 4. Why it took off (why now, why users stay)

- **Why now:** Coupang has been lowering the barrier for Chinese sellers from 2025–2026, and runs recruitment events across China, so new Chinese sellers keep arriving. They can't read Korean, local tools are hard to use, and Chinese tutorials mostly recommend itemscout and 2022's Geekbi.

- **How it was found:** The Jijingyun brand (its site claims "500k cross-border sellers, #1 market share in Temu/Shein product research tools") is already known to Temu and Shein sellers, plus cross-links between keywords and sites.

- **Why users stay and pay:** The plugin itself is free forever, so retention comes from "free sales history and price lookup, image search for identical items, and sourcing." Payment happens on the parent platform: Jijingyun Data VIP and the open platform API ("pay only for successful calls"). How much the Coupang part alone earns is not findable.

- **Why it hasn't grown bigger:** Coupang's Chinese seller base is far smaller than Temu's or Shein's. It hasn't been updated in over 2 months since listing and has no ratings, so there's no sign of active investment.

### 5. Differentiation

- Compared with Korean local tools: it has a Chinese interface aimed at Chinese sellers, and **image search for 1688 sourcing and supply-price estimates** , which are sourcing features carried over from the Temu/Shein versions. Local tools focus on keyword traffic.

- Compared with Chinese peers (Keyue, Coupkey, Geekbi): the plugin is free, one account covers nine platforms, and it's backed by a parent company's database and brand. Keyue goes deeper on AI and profit calculation.

- **Is this the reason it grew?** Only half. Chinese language plus free put it first in this small niche, but absolute growth is small. What really matters is the matrix template and brand reuse, not any unique feature.

### 6. How many people know it / whether anyone is copying it

- Visibility: almost nobody knows. No public revenue, no media or big X accounts have written about it. Only the parent company is known in the Chinese cross-border circle.

- Copycats: none spotted. A similar product, 科跃助手 (2026-06), launched two months earlier, so it doesn't count as a copy. 极鲸云 also launched an Ozon version of its own 2026-09 using the same template.

### 7. What others can learn

- A factory-style approach: "one free plugin per platform + a pinyin domain + WeChat groups + paid parent platform." Opening a new platform costs little, since you only swap the data source and the name, then see which platform takes off (the Temu version reached 100k).

- Timing for claiming the niche: watch which e-commerce platform is recruiting Chinese sellers at scale, and grab the keyword "X product research plugin" before any Chinese tool appears.

- Weaknesses are also worth noting: on a small platform like Coupang, a single plugin grows slowly. Treat it as a long-tail piece of a matrix rather than expecting a single line to get big.

### 8. Still unclear

- Whether the Coupang line brings any payments, and how much Jijingyun VIP costs (login required to see).

- How many users come from third-party plugin marketplaces like Ziniao and Miaoshou, and from recruitment-event partnerships (the Temu version is listed on the Ziniao ecosystem center; no Coupang listing found).

- Who owns the Douyin account "Coupang选品运营工具".

- Jijingyun's "500k sellers" claim comes from its own website and is unverified.

### Sources

- extops.dev/extensions/eclibmbkfcgmonnpjfohlabehlggikib (user curve, 2026-11-06 read)

- chromestore database (agent-im server): item / item_growth / search "coupang" (2026-11-07)

- coupangshuju.com, coupangshuju.com/download, geekbi.com, open.geekbi.com

- maijia51.com/dianpu/jijingyun.html (discount codes / referral links)

- kooai.top (Keyue KOO AI), coupkey.com

- ebrun.com/20250901/597081.shtml (Coupang fast store setup); sellfox.com/blog/article/coupang-ruzhu-sellfox; sohu.com/a/995758729_121123831 (2026 recruitment event)

- m.cifnews.com/article/114822, m.amz123.com/t/XjaqIkkl, 163.com/dy/article/HBK5R7GT0552CGX2.html (Chinese tutorials recommending itemscout / Geekbi)

- ziniaoeco.com/plugin/detail/16312716773961 (Temu product-research plugin on the Ziniao ecosystem center)

This article was written by AI from public data and the data we collect daily. Numbers are sourced, and inferences are labeled.