Ключевые слова: background, ball, bead, bead board, beads, bubble, building, cell, cellular material, close up, closeup, construction, dark, expanded polystyrene, foam, foam material, foam plastic, foamed, granulated, grey, industry, insulation, lightweight, macro, packaging, pellets, plastic, plastics, polymer, polymerization, polystyrene, porous, pressed, protective, ps, rough, rubber foam, solid, sphere, spherule, styrene, styrofoam, styropor, surface, thermoplastic,