... #5052 with alloy, 1.5 mm#303, 1.2mmAluminum with Magnesiumonly AluminumValve59 / 62 style refined copper ingotGB/T1176 Pb ... , Eco Friendlyregular copper, more PbSedal,Vernet,KCG CartridgeChina domestic ... certifiedregular qualtyChrome platingGB/T1176 Pb, Eco Friendlyonly option59 copper, Pb<1.5%, DR copperregular copperNickle>20-25u ...