This product is an automatic system for asphalt / concrete paving machinery which combines laser technology and GPS to perform real-time levelling checking and paving work automatically. The laser receiver could receive data up to 4 transmitter units which could achieve a maximum 2400m horizontally (600m per transmitter) and 40m vertically (10m per transmitter). It allows the paver to carry out the works according to the design drawings (such as: dwg & dxf format) and instantly compare the paving level with the design drawing.