150watt,16ohm alarm system horn loudspeaker siren driver unit high power speaker We were founded in 1998, specialized in ... loudspeakers, horn speakers, driver units, alarming horns, reflex horns, high-power speakers ,column/wall/celling/lawn speakers and sirens. We ... plants. We also have several technicians. We have ISO9001 Quality Assurance System Certification. Our products can be found worldwide and ...