Brand: Friendship 729 
Model: Blue Carbon 7
Number of layers: 7 (5 wood + 2 blue-black carbon fiber)
Thickness: 6.0±0.2mm
KOTO surface layer Panel:
Plywood: Blue-black arylate-carbon mixed fiber
Plywood: Ayous wood
Core: Paulownia wood Weight: CS 86±3g, FL 88±3g
        Model: Blue Carbon 7
Number of layers: 7 (5 wood + 2 blue-black carbon fiber)
Thickness: 6.0±0.2mm
KOTO surface layer Panel:
Plywood: Blue-black arylate-carbon mixed fiber
Plywood: Ayous wood
Core: Paulownia wood Weight: CS 86±3g, FL 88±3g
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