Most energy-saving doors and windows now use EPDM oxygen O-ring from China manufacture as raw material. EPDM is a copolymer of ethylene, propylene and a small number of third monomers. EPDM rubber seals are called EPDM for short in the world. EPDM oxygen O-ring from China manufacture has excellent resistance to sunlight and ultraviolet rays, weather resistance (the service life is the same as that of doors and windows), heat aging resistance, high and low temperature resistance, ozone resistance, chemical medium resistance, water resistance, and outstanding electrical insulation properties, elasticity, and other physical-mechanical functions. Also known as crack-free rubber, it is recognized as a good raw material for the production of sealing products in the world.

Now the market is still full of many fake EPDM sealing strips, and some manufacturers even promote the slogan that how much sealing strips customers need, they can produce what level of sealing strips.

As we all know, the important thing about EPDM oxygen O-ring from China manufacture rubber is the formula. If the formula does not meet the requirements, the physical properties of EPDM cannot be guaranteed. , the formula cost cannot meet the requirements of genuine EPDM oxygen O-ring from China manufacture, cannot have the superior functions of EPDM, cannot meet the hope requirements of the door and window system, cannot ensure the three-character and energy-saving specifications of doors and windows, and cannot do To qualified energy-saving doors and windows.