Ningbo Kingdun Electronic Industry manufactures self-contained and interlinkable photoelectric smoke alarms, heat alarms and carbon monoxide alarms at Yuyao, Zhejiang. Its smoke alarm range is LPCB-approved to EN 14604 under certificate 1275a, on which the company is the principal licence holder, and it publicises parallel VdS and NF approvals with CE marking under the Construction Products Regulation for individual lines. Established in 2000, it works as both an own-brand and OEM supplier into European distribution.