Tianyan Electronics Shenzhen Co.,Ltd is a professional manufacturer of electronics products, specializing in designing, development, production, sales&service. It was founded in 2001, located in Shenzhen city, Guangdong province, China. The company owns two factories, one of which is committed to manufacturing calculators, another focuses on the production&development of mobile powers and bluetooth speakers, so, our products cover:
1) students calculators ranging from primary school, junior middle school, to high middle school calculators. 2) bluetooth speakers. 3) mobile powers...

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