73121904
Apr 7, 1977
Jan 10, 1978
SELENIUM, [ TELLURIUM, ] COPPER SULPHATE, [ SODIUM SELENITE, SODIUM SELENATE, SELENIUM DIOXIDE, IRON SELENIDE, ZINC SELENITE, NICKEL SELENIDE, IRON TELLURIDE, SODIUM TELLURATE, TELLURIUM DIOXIDE AND SELENIOUS ACID ]
Chemicals[ BRASS, BRONZE, COPPER, NICKEL AND SILVER SHEETS, ROLLS, STRIPS AND CIRCLES; BRASS, BRONZE AND COPPER RODS; BRASS AND BRONZE WIRE; BRASS, BRONZE, CUPRO NICKEL AND COPPER TUBES; CONDENSER AND HEAT EXCHANGE TUBES; DUPLEX TUBES; BRASS AND COPPER PIPE; COPPER WATER TUBE; COPPER REFRIGERATION TUBE; COPPER AUTOMOTIVE TUBE; BRONZE WELDING RODS AND WIRE ]
Metal Goods