Dongguan Sweet Sound Electronics Co., Ltd., a Hong Kong independently owned company, was established in 1991. We are a professional enterprise specialized in the research, production and sale of various piezoelectric elements, piezoelectric sounders, piezoelectric ultrasonic transducers, piezoelectric horns, and electro-magnetic buzzers. Our monthly output is 25 million pieces. Nowadays, we have over 500 employees, a 24,000-square-meter manufacturing plant, and 200 sets of production and test facilities and instruments, including large scale automatic tunneling furnaces. Our company has attained ISO9001:2008 and ISO14001:2004 certifications. There are 60 senior engineers working in our plant. We have gained leading technical competence in the design and production of piezoelectric materials and acoustic components. Our products have been widely applied in various kinds of alarms, satellite receivers, microwave ovens, computers, calculators, digital cameras, electronic dictionaries, ultrasonic planimeters, medical devices, micro-displacement positioners, high voltage generators, facsimile machines, telephones, electronic toys and clocks. Our products and services have won a very good reputation for almost two decades.