... common color is grey,white oak,beech,green,blue,yellow,red...... -Edge: injected moulding PU edge with pencil groove,seamless to ... top.And not easy to peal off by naughty students. -Frame: Round steel tube with powder coating ,coating finishing color is ... the common color is black,grey,pink,green,blue,yellow,red.....Frame with adjusting function ,it can adjust according to the children ...