1. No pollution, acid can be reused. 2. can obtain min. 99.5% purity electro-deposit copper plates. 1. Technical IntroductionIt is designed for spent low copper content solution range in 5g/l-50g/l which is produced from tank replacement and tank washing for procedures such as black oxide line and internal layer pretreatment, solder dam pretreatment, chemistry nickel gold and silver line, copper ...