19 Non-metallic construction materials; non-metallic transportable constructions; non-metallic rigid pipes; concrete, cement; equipment for animal breeding and agricultural use, namely gates, posts, corrals, compartments, tanks, doors, cages and crowding chutes, mobile or not, head gates, silos, water tanks, stalls, grills, gratings, non-mechanical feed hoppers and enclosing gates, obstacle poles, obstacle hedges, training plots; panels and dividers, open or not; covering elements; non-metallic joinery, namely low gates, doors and windows and the frames thereof; all the aforementioned goods being non-metallic; non-metallic shelters for animals and non-metallic box stalls for horses