... 2,certificate ;EU,CE ,UL ,PSE,ISO, 3,price 8 to 27usd 4,applied for own patent We are the manufature ... cable reel products and monthly output up to 500,000 sets.We have invited to attend 2010 Shanghai Expo as only manufacturer ... can retract freely. With plugs on it, it is mainlyexported to Europe and the USA2.Obtains CE,UL,PSE certification,and support ...