The best C-class lock keys are patent keys, double rows, computers and compound curved grooves. Super C-class lock core is the lock core with the highest safety factor on the market at present. Its key is a combination of many technologies, and its structure is the most complicated. Have a strong ability to prevent technical opening and violent opening. The door lock also has an alarm function. If it is stolen, it will automatically call the police and send a message to the mobile phone.