Shenzhen Jinruihaitao Technology Co., Ltd. is a high-tech company which was founded in 2003. We specialize in the research and production of MP3 music USB speakers. We have a strong R&D department and experienced engineers. We can design and make OEM/ODM products according to your ideas and samples. Quality control is more an action than a slogan. Strict quality control is implemented in all aspects of operations to meet the high standards of top-tier customers. This philosophy has ...