Rankings on this site compare how complete and checkable each company's information is. They are not a judgement of product quality.
Where the data comes from
Company names, products and contacts are compiled from Chinese-language public sources: company websites, published product catalogues and national business registration records. Each company is matched to its registered legal entity, and the unified social credit code is shown on its profile where available.
The completeness score
Each profile scores up to 100 points:
| Field | Points |
|---|---|
| Official website | 20 |
| Company overview (40+ words) | 15 |
| Three or more product lines | 15 |
| Province and city | 10 |
| Business registration record | 10 |
| Published email | 10 |
| Founding date | 5 |
| Published phone | 5 |
| Logo | 5 |
| Capabilities | 5 |
Two kinds of profile
- Full profile: company overview, product range, capabilities, contacts and business registration, reviewed for this directory. Marked with a "Full profile" badge.
- Registered-company profile: built from the business registration record and the company's official website and contacts. It has no written overview yet. A company only gets this profile if it has an official website, a registration record and a published email or phone.
For registered-company profiles outside electrical equipment, "product lines" are the product categories the brand is listed in on this site.
Companies whose registered name or a missing Chinese registration suggests a foreign-owned group are listed as international brands.
How a category is ordered
- Chinese companies scoring 55 or more, by score. Full profiles come first when scores are equal; other ties are ordered alphabetically.
- International brands with China operations scoring 55 or more, in a separate section.
- All other companies in the category, listed with their registered name, website and contacts.
A category ranking is published once at least 6 Chinese companies in it score 55 or more.
What the rank does not mean
A higher rank means more complete, checkable information. It does not certify quality, capacity or compliance. Always confirm certificates, ratings and test reports with the manufacturer before ordering.
Independence
Listings are free. No company can pay to appear in a ranking or to change its position. The site may show a featured manufacturer: it is always labelled "Featured", shown outside the ranked list, and has no effect on scores or order.
Advertising
The site shows ads served by Google AdSense. Ads are separate from listings and rankings. See the privacy policy.
Updates and corrections
Data was last updated on 21 Oct 2026. Companies and readers can request a correction.