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PU-20 type polyurethane glue, a single-component glue that developed by our corporation, is superior in performance and operation. By adopting solidifying way of micro moisture in air and cohered surface, the glue line is no-dissolving and no-melting. Therefore it has been extensively used in metal plates such as color steel plates, galvanized plates and aluminium plates as well as inorganic boards such as paper gypsum planks, calcium silicate boards, glass magnesium boards, medium density board and ternary plates.  In addition, it can also applied to fireproof material （rockwool, glass fiber, perlite, aluminosilicate fiber felt）, heat insulating material （EPS FWB foams,XPS, rigid PU foams）, sound-proof material（paper honeycomb, aluminum honeycomb） and finishing material（melamine board）. The glue was awarded China National New Products Certificate in 1993.

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