... M2, M3, M4 type, have three series of strength training equipment. The main frame is made of the imported no. 10 ... it can bear high strength pull of 800kg. All the equipment frame has a repair period of 10 years, and components ... 5 years, and damageable parts(axletree, steel wire rope, chain wheel, handle ) 2years, and cushion 1 year. We assure that you ...