the best superiority is we have a very cheaper pricce.And it is made in Changshan Zhejiang China . PCB is used to make differents electronion products ,for example TV ,radio ,computer ,mobile phone and so on .Because we have a CCL factory ,and our price is cheap .Our CCL has a better quality ,so we can promise the quality about PCB .The brand name is YIHAI .It is a famous brand in Zhejiang. PCB