1. Hardness: Hardness is one of the parameters that best reflects the production process and technology of cast acrylic sheets, and is an important part of quality control. The hardness can reflect the purity of the raw material MMA, the weather resistance of the sheet and the high temperature resistance. The hardness directly affects whether the sheet will shrink and bend, and whether the surface will crack during processing. Hardness is one of the rigid indicators for judging the quality of acrylic sheets. Imported cast acrylic sheet has the highest hardness index of the same domestic product. The average Dallow's hardness value is around 89 degrees. 2. Thickness tolerance: The control of sheet thickness tolerance is an important manifestation of quality management and production technology. The thickness tolerance of the imported acrylic pouring sheet is controlled within +0.2mm. 3. Transparency/Whiteness: Strict raw material selection, advanced formula follow-up and modern production technology to ensure the excellent transparency and pure whiteness of the board. Crystal clear after flame polishing.