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Color: dark green
Size: 4000mm×1215mm
Board surface: metal paint is used to write the board surface, matte and dark green thickness ≥0.3mm, glossiness ≤12 luster units. There is no glare caused by the blackboard itself. Smooth writing is clear, color coordination and visual effect is good, which can effectively relieve students' visual fatigue. The surface of the board is covered with a transparent protective film, which conforms to the Safety and Health requirements of GB28231-2011.
Lining board: select high strength, sound-absorbing, moisture-proof, flame retardant polystyrene board, thickness ≥22mm.
Back plate: high quality galvanized steel plate, thickness ≥0.25mm, mechanized assembly line molding, with groove reinforcement, increase the strength of the plate body.
Laminate: Adopt environmental protection two-component polyurethane glue, automatic assembly line laminate operation, ensure firm bonding board surface level, formaldehyde emission ≤0.025mg/L, in line with GB 28231-2011 "Writing Board Safety and Health requirements".
Border: through oxidation electrophoresis of high strength champagne aluminum alloy profiles or using high strength silver oxide aluminum profiles, the specification is 30 mm ×27 mm, wall thickness ≥1mm, cavity structure, increase the stiffness of the board, teaching board using groove Angle, full package structure.
Wrapping Angle: high strength, anti-aging PP engineering plastic injection molding. ≥R15 rounded corners, no sharp burrs.
Installation: equipped with self-made L-shaped steel mounting pieces, invisible mounting pieces without exposed hanging pieces, in accordance with GB 21027-2007 "General Requirements for Safety of Student Supplies".
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