Established in 1993, Ningbo Yinzhou Henan Metal Foundry is located in Yunlong Town, the famous homet　

Welding and connection technology has developed into an important professional discipline in metal m　

Insert molding refers to the molding method in which the pre prepared inserts of different materials　

喷砂机能够使机器零件强化，可以使零件延长寿命；车辆外板的强化，能够提高抗应力开裂的能力；螺旋桨和外壳　

The polishing process has a long history and is widely used, but the efficiency of the traditional p