Solar Biotronic Laboratories Private Limited (SBL) has been designing and manufacturing custom built Sealed Keyboard Panels (Sealed Keypads) and allied products. Solar Biotronic Laboratories is a ISO 9001: 2008 certified company by TUV India.
SBL India is a manufacturer and supplier of capacitive touch switches, membrane keypads, sealed keyboards, metal keyboards, and capacitive switch panels in India.
Sealed PC-based keyboards comprise a Snap Dome Switch and a Glass Epoxy PCB, which is used as a base and for the circuit. A layer of Polyester covers and seals this assembly using Industrial.