Coson Home Baking Mats 11.6x16.5 inches Brown

Is the temperature range listed (-40~230°) in celsius?

What brand of pan is large enough to allow mat to lay totally flat and not curve up so I can use all rows of the mat for macarons?

Can I cut these to make them smaller or will the edges curl/fray?

These mats are oven safe to only 230 degrees Fahrenheit?? This is too low, over less than half of most silicone bakeware.