Slate coaster: 1 Lowest price and best quality and natural 2 owned factory 3 Heat insulation 4 Customized Slate coaster: 1 Lowest price and best quality and natural 2 owned factory 3 Heat insulation 4 Customized Slate coaster: 1.color: black, green, grey2.material: slate 3.shape: square round4.OEM service are available Product nameslate coasterSpecification10*10,12.5*12.5,14*14 cm,thickness 0.4-0 ...