The single acting hydraulic ram is only moved in one direction due to the movement by the hydraulic oil. When returning, relying on its own weight or external force such as a spring, the single acting hydraulic ram has two cavities, one with hydraulic oil
Our PP Woven laminated cooler bag in gravure printing, could support more than 95% close to your paper proof. Since we have high quality printing plate and printing ink. All of our material could pass EU and US standard.