
JAMA is a manufacturer specializing in the design and manufacture of cast iron pulley. From design development to engineering, we have established a worldwide reputation for quality, service, and reliability. According to the material, JAMA's products are divided into several categories, and bearing units is one of them. JAMAball and roller bearing is designed with a combination of different effects. The designers, based on the ergonomics, strive to create a product which integrates the shock absorption, bending, and slip prevention. From lasting comfort to a cleaner bedroom, this product contributes to a better night’s rest in many ways. People who buy this mattress are also much more likely to report overall satisfaction.

We are now taking steps to advance our sustainability performance in a more impactful way. We exploit and innovate new sustainability opportunities, such as low carbon fuels, energy sources, and the circular economy.