China Factory Rank

Guides

Buyer guides

Plain-language explanations of the equipment in this directory, with the checks that matter when you buy from a Chinese manufacturer.

What is switchgear?Switchgear explained: what it does, its main components, LV, MV and HV classes, AIS vs GIS, metal-clad panels, and what to check when buying from China.Switchgear vs switchboardThe difference between switchgear and a switchboard, how IEC and North American terms differ, and what to specify when sourcing from Chinese manufacturers.What is a ring main unit (RMU)?Ring main units explained: how an RMU works in a ring network, SF6 vs solid-insulated designs, common configurations, ratings, and what to check when buying from China.