The metal dome achieves comparatively greater tactile with significantly shorter actuation than Poly dome, and are used extensively in telecommunication products due to the properties like Slim design & light weight, Short actuation with excellent tactile, High operating temperatures of 85°C, Excellent Mechanical Life, etc..http://www.polytech.com.sg/Domes.html
Polytech is a leading no.1 manufacturing company in Singapore for Industrial rubber products which are Automative keypad, Consumable keypad, setup box, security device, automative rubber components, domes and touch panel with affordable cost and eff...