… are substituents on the polymer chain. This family of plastics includes acetal copolymers and is regarded as engineering plastics, being used for ring bearings, cams, automobile … uses, PPO being used, like the polyacetals, as engineering plastics, polyoxypropylene as an intermediate for …
… (ii) Small articles such as boxes and caskets. (iii) Discs, whether or not polished ( other than button blanks, … in other headings of the Nomenclature (e.g., articles of plastics ‑ Chapter 39 , or of ebonite ‑ Chapter 40 ). It … of unhardened gelatin include, for example : (i) Small discs for sticking billiard cue tips. (ii) Capsules for …
… of articles remain classified in this heading (e.g., simple discs, plates or strips for inlaying, etc., or for … (IX) Quills of feathers. (X) Shells of crustaceans and molluscs. The heading covers : (A) Worked animal carving … manner as tortoise‑shell. Polished or unpolished discs not having the character of button blanks (see the …
