Marcos passive system (no tin) ltd. Sits in the zinless mountain economic technology development area and is a one-stop supplier of rubber products and polyurethane products. In the field of industrial markets, we are constantly developing and innovatively meeting the special moving needs of customers for the original installation of equipment in industry. In accordance with industrial development requirements, we offer excellent products to meet market requirements for rubber synchronous bands, polyurethane synchronous bands, wedge bands, lift bands and synchronous cycling。