ESD rubber mat or conductive ground mats should be laid out in the workshops and advanced laboratories for microelectronic industries such as electronic semi-conduct devices,electronic computers,electronic communication equipment and integrated circuits etc. To eliminate damages caused by static electricity.When ESD rubber mat (ground mats) are laid out and grounded,the working surface will discharge the static electricity of human bodies so that a near-equipotential can be maintained for ESEDS tweezers,tools,utensils and instruments, through which human bodies contact the working table and static sensitive devices(SSD) are free from broadband interference produced by static discharging such as triboelectrification etc. In this way, electrostatic protection is realized. ESD rubber mat are mainly made of anti-static(conductive) and static-dissipative materials,and synthetic rubber. The surface layer is a 0.5mm thick static-dissipative layer.The bottom layer is a 1.5mm conductive layer. Generally,2mm thick double-layer structure is used. The available colors include green,gray,blue,black and yellow etc.*Resistivity of surface layer：107-10Ω9 *Resistivity of bottom layer：103-10Ω5 *Rattler loss：< 0.02g/cm2 *Time for static dissipation：< 0.5S *Length,width,thickness and colors are selectable Conductive ground mats are made of quality conductive material and synthetic rubber. Resistivity of surface and bottom layers：103Ω-105Ω.The black color is normally used.