MMmat Silicone Baking Mats Set of 2 Round Non-Stick Reusable Air Fryer Linner - Best German Silicone - 9 inch

What is the country of origin? I see “German silicone” on this and “Japan silicone” on others. But are those the countries of origin?

Are the round baking mats exactly 8 and 9 inches in diameter? If not, what are their exact measurements?