Carbon molecular sieve -CMS, is designed specially for picking up the Rich nitrogen gas from the air. Especially in scope of apply for separating nitrogen from air. Our CMS have higher adsorption capability for Oxygen, at same time to separate the Nitrogen as production. We can offer different type cms of high quality, and mainly slcms-180, slcms-190, slcms-200, slcms-210(sl-0510), slcms-200(sl-0520). Please contact us for more details. Comparing the capability and the price, you will find the salient feature of our products: the ratio of quality/price is high!