Some caster wheels will leave marking on the ground,Like rubber wheels,and poor quality plastic wheels. That’s can be work on outdoor,but when you used the caster indoor such as office ,hospital,library floor.Then select a non marking caster wheels is necessary.
　　
　　As mentioned above,as you want non marking caster wheels,you’d better don’t use rubber wheel or poor quality wheels. Which kind of caster can be used as non marking caster wheels?

　　1.Quality polyamide caster wheels---slightly noise
　　2.Good quality polyurethane caster wheels ---small noise
　　3.High quality TPR caster wheels----low noise
  
Consider the noise level .

*Polyamide caster and Polyurethane casters can be used on hard ground like cement and stone ground. Like factory,warehouse and logistic center,Wear resistance and easy maintain.

*TPR casters are mostly used as hospital casters,and medical devices casters. Because of it’s low noise and non marking.

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