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 nickel, copper, tin, chromium; baths for galvanisation [galvanising baths]; galvanising baths and bath compositions [galvanising compositions]; coating agents [chemicals], other than paint, of electroless deposition baths and bath compositions; bath compositions [chemi...