1.7 m high, 30MM tube, wide 80㎝ long 100㎝1, basic dimensions: L * W * H * chairs face high = 900 * 685 * 1880 * 1550 (mm). 1.86 m high chair surface volleyball, tennis umpire chair 1.1 meters high. 2, badminton referee chair mainly by the base, frame and the seat of three parts. 3, the referee chair base, stents are used φ32x2 pipe production, the upper bracket has a resting hand, put hand to plate, using folding and bracket, flexible flip. 4, the referee chair seats with fiberglass chair or Blow chair, connected by bolts and other fasteners and brackets, perennial maintained without fading. 5, the referee chair base with a walk round, easy to move, base support units have gloves to protect stadium floor. 6, all steel surface have been pickling, phosphate, sand and other primary processing play in automatic spraying line using pure polyester powder coating to complete the final surface treatment, coating thickness 70-80um, pencil hardness of 3H +, test merit goods by GB1771-91 36 hours of salt spray test, coating remained unchanged at Hatch sided corrosion <2mm, reduced product with acid, heat-resistant, anti-aging, beautiful appearance, etc., can be suitable for moist and acid rain environment, and products coating formulation does not contain toxic elements, to avoid damage to the health of users.