... with PCB-1 . Usage: 1, opened the machine, take the shockproof bubble, unclose double-sided adhesive ... water pump, fix the worktable. 2, machine inspection: put the machine on a smooth table, inject water for ... than worktable. Dont melt ferric chloride in the machine, the draff damage water pump easily.The ratio ... box to prevent the pump damage.4,please stock solution in confined container if not use for ...