Dino founded in 1994 in Shenzhen. We focus on calculators manufacturing for 24 years. Now our factory is located in Huizhou, covers an area of 15,000 square meters. We have more than 400 workers and a professional R&D team including 20 engineers. We have a complete set of calculator's production lines. Including mold processing, plastic injection, screen printing, electronic bonding, assembling and professional testing machines.After years of development, Dino has completed a strict quality system and industry-leading management which reached the standard of the international ISO9001 quality management system. Meantime, all products of Dino are approved by CE FCC, ROHS and other quality certifications.The brand of JOINUS