Shenzhen Tianyan electronic co., LTD is the member units in China Education Equipment Industry Association, and the only quality supervision enterprises in China Education Institute in similar products. It specialized in the design, development, manufacture and sales of electronic products. Our company has certificated ISO9000-2008 quality management system and ISO14001 - 2004 environmental management system, etc. We now have sereval production lines, can undertake various of external OEM & ODM calculator processing, and other electronic products processing."Integrity, pragmatic, innovation, service education" is our philosophy, also is our goal. We are looking forward to cooperating with you!