(I see this was already answered in detail)
kitemark is UK ( i thought European but wikipedia says UK )
https://en.wikipedia.org/wiki/Kitemark
The Kitemark is a UK product and service quality trade mark which is owned and operated by The British Standards Institution (BSI Group).
The Kitemark is most frequently used to identify products where safety is paramount, such as crash helmets, smoke alarms and flood defences...
PS as for combined power strips/ wall powerpoints which also have USB sockets ( e.g. Power tower) . it seemed a nice idea but every one I looked at ( a while ago) had a bunch of very bad reviews for USB quality & reliability