Airtight storage bags with zipper

39.23 - Articles for the conveyance or packing of goods, of plastics; stoppers, lids, caps and other closures, of plastics. 3923.29 - Boxes, cases, crates and similar articles - Sacks and bags (including cones) : - - Of polymers of ethylene - - Of other plastics 3923.30 - 3923.40 - Spools, cops, bobbins and similar supports - Stoppers, lids, caps and other closures - Other 3923.10 3923.21 3923.50 3923.90 Carboys, bottles, flasks and similar articles This heading covers all articles of plastics commonly used for the packing or conveyance of all kinds of products. The articles covered include : (a) Containers such as boxes, cases, crates, sacks and bags (including cones and refuse sacks), casks, cans, carboys, bottles and flasks. The heading also covers : (i) Cups without handles having the character of containers used for the packing or conveyance of certain foodstuffs, whether or not they have a secondary use as tableware or toilet articles; (ii) Bottle preforms of plastics being intermediate products havin tubular shape, with one closed end and one open end threaded to secure a screw type c osure, the portion below the threaded end being intended to be expanded to a desired size and shape. (b) Spools, cops, bobbins and similar supports, including video or audio cassettes without magnetic tape. (c) Stoppers, lids, caps and other closures. The heading excludes, inter alia, household articles such as dustbins, and cu s which are used as or conveyance of tableware or toilet articles and do not have the character of containers for the goods, whether or not sometimes used for such purposes (heading 39.24), containers of heading 42.02 and flexible intermedate bulk containers of heading 63.05. packg