Symphony red engineering board is specially ordered and processed according to the design drawings according to the size and shape of the surface to be decorated in the construction project. It is suitable for a specific building area and shape. Finished granite and marble slabs.

Since the surfaces to be decorated in construction projects are large and small, convex and concave, and their dimensions are not all multiples of standard boards, most of the constructions use engineering boards. Therefore, except for semi-finished products, it is the largest selling product in the board market. The engineering board is dedicated to the designated construction project, and it cannot be applied to another construction project.