Does PET mat turn yellow as time went?

Does PET mat turn yellow as time went? 

This is a common question that many people ask. The reasons for the yellowing of PET plastics may be various. 

First of all, the plastic material itself is susceptible to oxidation and light. Prolonged exposure to sunlight or oxygen can cause plastic to change color. 

Secondly, the use of PET mats may also have an impact on the yellowing of plastic. 

For example, if the urine or other stains left by PET on the mat are not cleaned in time, these stains will gradually penetrate the interior of the plastic, resulting in yellowing. In addition, incorrect cleaning methods can also have an impact on plastic color. Using cleaning products that contain bleach or strongly acidic cleaners may cause the plastic to turn yellow. Finally, the quality of the plastic also affects yellowing. Low-quality plastics are relatively more susceptible to the external environment, resulting in a higher likelihood of yellowing.