Ji'nan lanbeisite Technology Co., Ltd.   

Blackboard technology standard 1, the maximum deviation is not more than the standard size 1%; 2, the writing surface color: dark green, matt; 3, the roughness of the surface: Ral.6-3.2um; 4, gloss < 12%, no significant glare; 5, the writing surface material: magnetic steel sheet, thickness 0.30mm, hardness is 6H, the paint layer is 0.035mm; 6, the inner core material: inner core 18kg density, high density polystyrene foam plate with thickness of 21mm; 7, the backplane: galvanized 0.2mm backplane thickness, smooth surface, corrosion and rust. 8, the frame material: aluminum alloy frame, hardness is HRC10, the wall thickness of 1mm, width of 37mm, the technical performance is not lower than the national standard GBTS237-93; 9, the frame and the writing panel fixed: no metal fasteners exposed; 10, the protection of the writing board: used with colorless transparent protective film, only in the official use of the former is torn off; 11, installation: installed in invisible, no connections exposed; 12, easy to write: the use of ordinary chalk to write feel smooth, friction is moderate, uniform, the line was of note; 13, easy to clean: wipe with dry wet eraser on both sides of the reciprocating, no obvious residual handwriting, wipe with a clean damp cloth, without leaving any traces; 14, the wear resistance: the writing surface after ten thousand times after cleaning, the surface roughness is not less than Ra1.6um, the average use of surface friction force three years should be no obvious change.

Green board, whiteboard, blackboard, interactive push and pull the black, anti-static floor