gdguangwei

roller shutter spring,spring steel strip,band saw,steel strip,Anneal steel strip, Manufacturer and Supplier - China(CN)

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  • light wireless switch
    light wireless switch

    Description : We produce energy harvesting B20 technology smartswitch, details as following: DIDIOK is introducing self-powered wireless switches without running wires. By pressing the switches, it can generate enough electricity to send radio signal to a light controll