... brightener plating intermediate Brightener and leveling BOZ cas no. 110-65-6 1,4-Butynediol nickel brightener intermediateBOZ nickel lasting brightener ... , CB-4, CB-5,CB-6...Acid Copper PlatingSPS, PZ-1,PZ-2, PZ-3, PAC, BY-1, PAE-9, Polyether-8, Water ... Sulfate, Chromiun Nitrate.... BOZ 1,4-Butynediol cas no. 110-65-6