As a loudspeaker professional, WING CHEONG does provide speaker models complying with the following approvals/ standards
UL1480 is a standard introduced by Underwriters Laboratories, which provides speaker standards for fire alarm, emergency and commercial and professional use.
EN standard, carried out by independent standards bodies, acting at national, European and international level.
Factories of WING CHEONG are accredited for ISO9001 (Quality Management) & ISO14001 (Environmental Management System).
CAN/ULC-S541 standard, introduced by Underwriters Laboratories of Canada, is a standard for Speakers for Fire Alarm Systems.
The Restriction of Hazardous Substances Directive (RoHS) 2002/95/EC was adopted in February 2003 by the European Union and was effective on July 1, 2006.