In what condition we need to use lead-free HASL?
Environmental protection orders always use lead-free HASL, the soldering temperature of lead free board is a little higher; For normal debugging board, we suggest to use HAL will be ok.
Can the copper foil be thicken?
Sure,the thickest copper board we can make is 7Oz at present, pls contact with our seller if need thicken the copper foil.