Teaching seating is given priority to with what material?

by:OUHE     2020-06-30
Seating is our common teaching at the university classroom, or auditorium the primary and secondary schools to. They are all with good explosion screws stand feet. According to our common form can know the material of it. Teaching runs through common material: sandwich plate, metal, steel pipe frame, silent steel pipes, cast iron, aluminum, cold steel frame, PP plastic board, cloth, sponge, etc.
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