1.Circuit and pattern (Pattern): The circuit is used as a tool for conducting between components. In the design, a large copper surface will be designed as a grounding and power supply layer. Lines and drawings are made at the same time. 2.Dielectric layer (Dielectric): It is used to maintain the insulation between lines and layers, commonly known as the substrate. 3.Silkscreen (Legend/Marking/Silkscreen): This is a non-essential component. Its main function is to mark the name and position box of each part on the circuit board, which is convenient for maintenance and identification after assembly.MPCB, a metal-based PCB, is comprised of a metal substrate (ie Aluminum, Copper or Stainless Steel ect.,), thermal dissipating dielectric and the copper circuit. Due to its superior heat dissipation, MPCBs are used for a wide array of applications. You can find them in power supplies, LED lighting or anywhere that heat is a major factor.

SMT	Position accuracy:20 um
	Components size:0.4×0.2mm(01005) —130×79mm,Flip-CHIP,QFP,BGA,POP
	Max. component height::25mm
	Max. PCB size:680×500mm
	Min. PCB size:no limited
	PCB thickness:0.3 to 6mm
	PCB weight:3KG
Wave-Solder	Max. PCB width:450mm
	Min. PCB width: no limited
	Component height:Top 120mm/Bot 15mm
Sweat-Solder	Metal type :part, whole, inlay, sidestep
	Metal material:Copper , Aluminum
	Surface Finish:plating Au, plating sliver , plating Sn
	Air bladder rate:less than 20%
Press-fit	Press range:0-50KN
	Max. PCB size:800X600mm
Testing	ICT,Probe flying,burn-in,function test,temperature cycling