threaded vent caps for residential fuel oil tanks. Sec. 11911.  Cast iron nonmalleable threaded bushings for residential fuel oil tanks. Sec. 11912.  Cast iron nonmalleable threaded tank adapters for residential fuel oil tanks. Sec. 11913.  Cast iron nonmalleable threaded fill alarm main body for residential fuel oil tanks. Sec. 11914.  Cast iron nonmalleable threaded fill box caps for residential fuel oil tanks. Sec. 11915.  Cast iron nonmalleable threaded leg flanges for residential fuel oil tanks. Sec. 11916.  Portable gas cooking stoves. Sec. 11917.  Portable outdoor cookers. Sec. 11918.  Self-anchored beverage containers. Sec. 11919.  Stainless steel handmade kitchen sinks. Sec. 11920.  Loose frame baskets. Sec. 11921.  Two-story fire escape ladders. Sec. 11922.  Three-story fire escape ladders. Sec. 11923.  Work support stands of steel. Sec. 11924.  Locking fixtures of iron or steel. Sec. 11925.  Stainless steel phone handle-and-stand accessories. Sec. 11926.  Circular and S-shaped stainless steel carabiners. Sec. 11927.  Pieces of refined unwrought copper cathode 99.9999 percent pure. Sec. 11928.  Ultra-thin and wide-width aluminum foil. Sec. 11929.  Etched capacitor aluminum foil of a thickness 0.018–0.126 mm. Sec. 11930.  Stove top coffee makers. Sec. 11931.  Aluminum shower caddies. Sec. 11932.  Step stools of aluminum. Sec. 11933.  Aluminum ladders. Sec. 11934.  Circular and S-shaped aluminum carabiners. Sec. 11935.  Stationary sprinklers of zinc. Sec. 11936.  Tungsten waste and scrap. Sec. 11937.  Cobalt alloys. Sec. 11938.  Certain gallium (Ga). Sec. 11939.  Niobium (columbium) rings no thicker than 20 mm. Sec. 11940.  Tungsten secondary raw material. Sec. 11941.  Gear-driven bolt cutters and pipe cutters. Sec. 11942.  Rotary cutters. Sec. 11943.  Food graters. Sec. 11944.  Hand tools for applying plastic clip fasteners to garments. Sec. 11945.  Steel workstations with vises adjustable by foot pedal. Sec. 11946.  Fixed carbide cutter and roller cone drill bits. Sec. 11947.  Rotary food graters.