Our company is a science and technology industry that professionally developed and manufactured deaf-and-dumb audiphone and earphone. Our company have persued a positive and enterprising manner, and have elaborately developed more than 10 varieties of deaf-and-dumb audiphone suitable for all kinds of deaf-and-dumb sufferer since established and created "haosheng brand" deaf-and-dumb audiphone in 1990. Our capacity of manufacture is annually 200, 000, and our product is increasing selling.