This is luoyang tianzhou machine.,LTD. We specialize in the manufacturer of caterpillar3304(8N1188/1N4304)&3306(8n1187/8n6796) &3204/8(6I2378) 3406(1105096/1105097) D342/D8K(8N6004/8N6000)cylinder head and 3066(S6K)&3306(1N3576)&3304(1N3574)block,cummins 6BT&6Ct cylinder head and block. with good quality and very competitive price. Hope to be a partner of your company!