HIGH DENSITY POLYETHYLENE
Polyethylene materials are divided into categories based on their specific gravity:
(a) low density polyethylene having specific gravity of 0.910 — 0.925,
(b) medium density polyethylene, specific gravity of 0.926 — 0.940, and
(c) high density (linear) polyethylene, specific gravity 0.941 — 0.965.
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Glaz Vinyl | Vinyl Sheets, Rolls & Door Strip | Johnston Plastics
http://www.johnstonplastics.com/glaz_vinyl.htm Giant Elephant: Weighing 40 tons and measuring 12 m high, this mechanical elephant, designed by François Delarozière, with hundreds of moving parts and pistons was largely made of reclaimed poplar together with steel and flapping leather ears, was operated by 22 manipulators and could carry 30 people. It was the star of the live theatre show, The Sultan's Elephant. photo by Stox-Ideas
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