The products which are designed and developed by ourselves as the following: YD250 Series (Metal Encryption Keypad/Metal PC keyboard), YD400 series (Stripe card reader), YD500 Series (PIN pad),  YD600 series (Financial card encoder), YD700 Series (Card reader with keypad), YD790 Series (ID card reader), YD800 Series (pos terminal), YD900 Series (Card reader module), etc. Those products have been widely used in finance, security, post and telecommunications, taxation, commercial retails and other fields in China.