Electromagnet, Solenoid, Air Core Coil manufacturer / supplier in China, offering Landa Mx5027 Electromagnetic Lock 12V 24V DC Electric Lock 45kg Force Keyless Smart Lock for Fireproof Door, Landa Mx5025 Electromagnetic Lock 12V 24V DC High Security Lock with Flush Mounted and Open Mounted Type for Fireproof Door, Landa Ldml0180 Electromagnetic Lock 12V 24V DC High Security Magnetic Lock with Flush Mounted and Open Mounted Type and so on.