... circle, are welcome.Features:1. Low Density: 67%~74% of aluminum2. High Strength, Tenacity, and Modulus3. Chemical Stability4. ... and arrows, crossbows, golf shafts, slide guides, boat, kayak2) Tool: umbrella shaft, umbrella rod, curtain rod, fence post, rail, ... 20 years manufacturing. Our company offers a wide selection of fiber reinforced plastic (FRP) composite materials standard products ...