In Chengdu, China, wall outlets typically accommodate three main plug types: Type A, Type C, and Type I. Standard Chinese power sockets often feature a multi-functional hybrid design with two slots: the top slot accepts two-pin plugs, including Type A (two flat parallel pins common in North America and Japan) and Type C (two round pins common in Europe), while the bottom slot is specifically designed for Type I plugs (three flat pins in a V-shape, similar to those used in Australia and New Zealand). The electrical system operates on a standard voltage of 220V at a frequency of 50Hz. While many modern chargers for laptops and smartphones are dual-voltage (rated for 100-240V) and can be used with a simple plug adapter, travelers with single-voltage appliances from 110V countries, such as the United States or Japan, will require a voltage converter to avoid damaging their devices. Additionally, while two-prong Type A plugs fit Chinese sockets, three-prong Type B plugs from the U.S. require an adapter to fit the local Type I grounding slot.