1.Surface layer was made of solid plastic composite materials,ensure the surface friction of the disk to meet BIFMA requirement.
2.Middle layer,sandwich construction was made of steel,
3."Rings" design, easy to move and perform the test.
Parameter:Weigh 10 kg, having a diameter of 350 mm and a thickness of 48 mm. The surface friction of the disk is 31 N ± 9 N.
Test Objects:Seating with tilting backrest
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