Technical standards in Hong Kong

As a former British colony and territory, technical standards in Hong Kong of today has been largely influenced by that of the United Kingdom, with some exceptions due to local and practical considerations. == Electrical plugs and adaptors == Before the legislation of the Electrical Products Regulation (a few years prior to the handover in 1997), British standard extension cables, plugs and adaptors were seldom found in the market.

Source: Wikipedia — Technical standards in Hong Kong (CC BY-SA 4.0)