 Later in 1978 Rogers (actually Swisstone because Rogers now wasn't a company but a trading name) under Michael O'Brien and Brian Pook buy Chartwell from the official receiver.In 1993 the brand was sold off to its new Chinese owners Wo Kee Hong Holdings, who had since developed the Rogers brand to include surround sound speakers, car audio equipment, Dolby Digital receivers and plasma and LCD TV screens.Although Wo Kee Hong owns the rights to the name, it had retained Swisstone as the sole researcher and designers of the Rogers speakers, therefore preserving the brand's British origins for a while.