This is an amazing design, the main frame is stainless steel, long service life, high gloss, not easy to corrode and good safety. The seat height can be adjusted at will, suitable for different people and places. Rotating pulley, 360-degree free rotation pulley, free movement, good stability. Aluminum alloy claw base, aluminum alloy strength five-claw design, safe and reliable, wear-resistant and durable. Explosion-proof chassis, safety and explosion-proof chassis design, strict testing.