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About Us

Founded in 2008, HAD Molecular Sieve Co., Ltd is a professional manufacturing enterprise providing customers with molecular sieves (3A, 4A, 5A, 13X), desiccants ((activated alumina, silica gel) and other adsorption materials for petroleum chemical processing, alcohol refining, air separation, and other industrial applications. High-quality, efficient adsorbent products ensure the safety of processing equipment during operation. HADsiev is proud of the fact that our products have been successfully applied in a number of large oil refining and chemical processing enterprises, steel plants, paint coating centers for automotive products, and other industries. Our industry expertise enables us to provide you with drying, adsorption, and catalytic solutions more quickly and professionally.

  • About UsLarge scale oil refining field
  • About UsCAFF automotive air drying tank

Our factory is configured for automation and large-scale production. Located in Shanghai, our production facility has a total output capacity of 9500 tons of molecular sieves and desiccant products each year, including 6000 tons of bead adsorbent production lines, an annual output of 2000 tons of extruded adsorbent production lines, and an annual output of 1500 tons of powder adsorbents production lines.

HADsiev also operates a professional laboratory used to test the performance of our finished products and ensure they are 100% qualified before they can be delivered to customers. With a strong production output capacity and our proximity to the Shanghai International Seaport, we are able to meet the demands of customers in a timely manner. We are also able and willing to provide customers with professional advice when it comes to selecting proper adsorption products. We can work with you to reduce costs according to your specific applications.

Main Products
    1. 3A-XH Molecular Sieve Desiccant for Refrigerants3A-XH molecular sieve desiccant for refrigerants is silica aluminates in potassium and sodium form with a pore opening of 3 angstroms or 0.3 nm. It is a generic kind of desiccant, which can be classified as three types of molsieve adsorbent, XH-7 type, XH-9 type and XH-11 type.
    1. 4A-DG Molecular Sieve4A-DG molecular sieve is mainly suitable for deep dehydration dry of natural gas, high strength of which can fully guarantee its service life. Also, it can absorb moisture in natural gas, a small amount of carbon dioxide, hydrogen sulfide and other trace impurities.
    1. 5A Molecular Sieve5A molecular sieve is calcium and sodium type silica aluminates with crystal pore diameter of 5 angstroms or 0.5 nm. It is widely used in air purification system for removal of impurities such as water, carbon dioxide, acetylene and so on. Also, we apply our product to purification, dryness and separation of inert gas ...
    1. 13X-APG Molecular Sieve13X-APG molecular sieve is suitable for dryness of general industrial gas, as well as purification of virgin gas in air separation equipment which also removes water, carbon dioxide and some hydrocarbon in the meantime. In order to meet the special needs of deep cooling air separation field ...