Brazilian double cam brass lock cylinder factory for the Brazilian market for the characteristics of the production of various specifications of brass lock cylinder equipped with a keyhole lock cylinder exclusive to the Brazilian market, the characteristics of the double toggle wheel is to open the door and the outside of the door when the lock part does not affect each other, the cam material: powder metallurgy, Q235 iron plate two kinds of optional. Powder metallurgy cam using high-strength materials FC-02-08 pressed and sintered from its characteristics of durable wear; Q235 material cam for the iron plate through the mold by the stamping equipment for a one-time molding of the product, which is characterized by the toughness of the better after a strong collision will not break. This lock cylinder is suitable for entry doors, aluminum doors, electrical cabinets, bedroom doors, electrician's room, plumbing room, public access, stairway and other uses. This lock cylinder is divided into: double open lock cylinder, knob handle single side lock cylinder, key single side lock cylinder, knob handle lock cylinder double open lock cylinder. Products according to the different needs of users can be optional anti-drilling, anti-dialing, anti-vibration function of the lock cylinder so that lawbreakers can not open the lock so that the user is more at ease.