
From weak to strong, from immature to mature, JAMA has developed into a leader in manufacturing bearing manufacturing company. JAMA's ball & roller bearings series contains multiple sub-products. The structure of JAMAcast iron pulley is checked through various methods of welding tests. These tests include bend testing shear stud, bolt tightening or torque test, magnetic particle inspection test for welding, ultrasonic test for welding, visual test for welding, etc. Free of toxins like lead and mercury, this product will not cause any threat to users' health. Instead, it is regarded as a green light source.

By providing highly cost-effective products, our team brings a high-quality life to customers. Welcome to visit our factory!