... product type approval send out sound&light alarm Gained ISO9001,ISO14001,ISO28001 Gas detector/gas alarm/gas detector alarm/LPG ... alarm for home/LPG Gas alarm for home with ISO9001,ISO14001,ISO28001 certification Main functions and characteristics:1. Following the ... GB15322.2-2003 standard,have gained ISO9001,ISO14001,ISO28001 Certification.2. Because of the high-quality electronic ...