FRD-Ceramic lamps IR Ceramic Heating Elements: 1.Certification:UL,CE,ISO,SGS 2.Qualtity,competitive ... contact with water, and 2-5 million hours of uninterrupted heating. Is the longest life expectancy in all lamps lamps. * Far ... , suitable for wet environments * Easy installation, coupled with ordinary ceramic lamp holder, spin can 2013 flat-bottomed ceramic ...