After the Φ5mm standard response sprinkler bulb (WS G5) obtained the UL Certification in March 2010, the Φ3mm fast response sprinkler bulb (WS K3) of Weeson Tech have also obtained the UL Certification in March 2017 (the certification number is EX15705).

Both WS G5 and WS K3 sprinkler bulbs are applicable to UL standards: ANSI/UL 199, ANSI/UL 1626, ANSI/UL 1767. The WS series sprinkler bulbs are made by mature technology and high-quality raw materials to ensure their stability and excellent performance.

When a fire situation occurs, the sprinkler bulbs will operate automatically due to the effect of heat within a setting time and activate the sprinkler system, and thus effectively control the fire in early stage.

WS series sprinkler bulbs are our main products for overseas markets, which are welcomed by our customers for their high cost-efficiency and excellent performance.