Chemical preparations for industrial and scientific purposes; galvanising baths; galvanising baths and bath compositions (galvanising compositions) with precious metal salts and with non-precious metal salts, in particular with zinc, nickel, copper, tin, chromium; galvanising zinc bath; baths for galvanisation [galvanising baths]; galvanising baths and bath compositions (galvanising compositions); coating agents (chemicals), other than paint, of electroless deposition baths and bath compositi...