Same specification of a line, because the manufacturer is different, the price can differ 20% ~ 30%. As to quality actor bad, length is standard, consumer is more difficult judgement
But it is also copper conductor, also have inferior copper conductor, its copper core chooses to regenerate copper, contain a lot of impurities, some inferior copper conductor conduct electricity performance is inferior even to iron wire, cause electric accident extremely easily. In addition, lack of length and the amount of glue in insulator is also an important cause of price difference.
