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Benson optical-electronic international limited found in 2009, it located in DongGuan city, Guangdong province, China. We are focus to optical electronic products OEM&ODM manufactory, main product that's Bluetooth speaker, USB flash drive, Auto-darkening welding helmet & filter, our products 90% sell to oversea market. We are annual turnover about US$1, 500, 000. And 70% of them to Europe and North America. "Sincerity is the basic, Quality is the first" is our service target forever.