The products includes five series: crusher, sand making machine, powder grinding mill, mineral processing equipment and building materials equipment.For a entry level ballyou can still use it for most activities from yoga to stretching to a work chair to fitness exercises such as push-ups or ab crunches. The ball can withstand reasonable bouncing and heavy people up 600 lbs. But I wouldnt risk it if you were 400-600 pounds. Simply because of the amount of pressure extra weight can have..
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