Established in 1991 . Huiyin Electronics Co, Ltd is a high-tech enterprise which specializes in research and development production and marketing of car siren speaker , motorcycle siren speaker as well as electronic siren. Our company has been approved by ISO9001:2000 International quality system . All along , with the excellent quality , first-class and innovative product development capabilities and human services .We leading far war from the production level of the industry . And we obtain favour by numerous famous car and motorcycle brand and car & motorcycle alarm system factories to supply and match siren to them chronically.