China Factory Rank currently ranks 25 Chinese companies across 5 core power distribution categories: switchgear, ring main units, prefabricated substations, vacuum circuit breakers, transformers. The most common home provinces among them are Zhejiang (3), Shandong (3), Beijing (3).
Category snapshot
| Category | Companies listed | Ranked Chinese | Provinces (ranked) | Earliest founding year (ranked) | Current top 3 |
|---|---|---|---|---|---|
| Switchgear | 18 | 14 | 10 | 1959 | Mingyang Electric, SOJO Electric, TGOOD |
| Ring main units | 14 | 10 | 7 | 1959 | Kelin Electric, SOJO Electric, XD Electric |
| Prefabricated substations | 23 | 19 | 12 | 1959 | Kelin Electric, Mingyang Electric, SOJO Electric |
| Vacuum circuit breakers | 10 | 7 | 5 | 1959 | PEOPLE Electric, XD Electric, CHINT |
| Transformers | 12 | 10 | 10 | 1959 | Baobian Electric, Mingyang Electric, XD Electric |
How to read the table
- Companies listed is every company in the category on this site, including international brands and companies without a full profile.
- Ranked Chinese counts Chinese companies that score 55 or more on our published method. The order reflects how complete and checkable each company's information is, not product quality.
- Earliest founding year is the oldest founding year among ranked companies, as stated by the company or its registration record.
What to check before ordering
For medium-voltage equipment, ask for type-test reports from an independent laboratory for the exact design you are buying, routine test records for your units, and a factory acceptance test. Match the supplier's registered name and credit code to the contract; see how to verify a Chinese company and the switchgear buying checklist.
About this data
Figures are taken from the category pages of China Factory Rank as of 21 Oct 2026 and change as profiles are added or corrected.