1.结构紧凑，外形美观。2.复合Y型圈密封，可靠耐用。3.含油轴承导向，耐磨平稳。 4.缓冲针阀与气口同侧，安装更方便。5.无拉杆设计，缸盖紧固缸体，增强刚性。6.SIH为经济型四拉杆式，缸筒为圆缸筒1. Compact structure, beautiful appearance. 2. Composite Y-ring seal, reliable and durable. 3. Oil-bearing bearing, wear smooth. 4. Coushion needle and the air port at the same side, the installation more convenient. 5. No tie rod design,cylinder head tightening the cylinder, enhance the rigidity. 6.SIH:tie rod, round tube.
