... Layer:Single-layer2)project commissioned: free sample3)The technology is the use of intelligent microprocessor control curcuit, used in high-power single ... the technology small size, good stability and low cost.5)Control curcuit functions, such as electric, pneumatic tools, linkage function ... and much more, and the use of microcomputer control curcuit.PCB,PCBA,LED vacuum controller/vacuum cleaner PCB ...