... of class 100-1000 2.excellent dust-free as design 3.excellent anti-static Anti-static pvc shoes/PVC cleanroom shoes ... and comfortable, especially the PU shoes, with advanced wearable ability,3.It's 5 times of common PVC or PU shoes ... , optics, aerospace, aviation and industries etc. Anti-static pvc shoes 103,Used in electronics, medicine, bioengineering