
After years of steady development, JAMA has become one of the leading ball & roller bearings manufacturers. The ball & roller bearings series is one of the main products of JAMA. The production of wecast iron pulley follows the smooth production process and comes out with high accuracy. The pen for this product includes a pressure detection system. As with a pencil, applying more pressure leaves a darker line, while less pressure makes a lighter one.

our teammakes its decision to offer the most professional customer service to attract customers. Please contact.