... +105. Reliability, stability, security: a) The crust of ballast is made of aluminum alloy , small capacity, dispelling hot quickly which ... guarantees the stability of ballast; b) The ballast wiring is made of the silica gelmaterial which is fireproof, anti ... and anti-jamming; d) The ballast wiring is made of the silica gel material which is fireproof, anti-high temperature, anti ...