Silicone Mat Non-Slip Resin Casting Crafts Pad Sheets Protector vs Silicone Grip Mat: which is safer?

Where these two actually differ

• We flag Silicone degradation and leaching (non-toxic but physical), Contamination from manufacturing residues and Counterfeit product risk on the Pyrex and not on the Silikomart.
• We flag Siloxane leaching (low-molecular-weight oligomers), Microparticle shedding from grip surface and Mold or bacterial growth in surface texture on the Silikomart and not on the Pyrex.
• The Pyrex is silicone mat, no coating disclosed where the Silikomart is silicone rubber grip mat, non-coated, which is most of the difference in these two grades.