Ningbo Ambest Electronics Co., Ltd. is specializing in producing photoelectronic smoke detector, heat detector, gas detector and so on. With strong technical support, a assembly line according to UL standard is set up. The detector meet full requirements of UL, VDC, LPCB or BSI. We are one of important elements in new, animate and stron. Except for reliable, competitive prices, excellent service and strong supports, with which we share you to promote market and grow continually. As one of biggest manufactures in the world, we can offer Sentek brand, as well as OEM and ODM for your special requirement.