Specifications1. PCB layout, PCB design; 
2: Make high difficulty PCB (1 to 28 layers) 
3: Provide all Electronic components; 
4: PCB assembly;  LEACH, also offers: - Contract Manufacturing- Engineering Services- PCB Design & Assembly- Product Design- Prototyping- Cable and Wire Assemblies- Plastics and Molds 1.Detailed Specification of PCB Manufacturing 

1	Layer	1-8 layer
2	Material	FR-4,CEM-1,CEM-3,Hight TG,FR4 Halogen Free,FR-1,FR-2,Aluminum
3	Board thickness	0.2mm-7mm
4	Max.finished board side	500mm*500mm
5	Min.drilled hole size	0.25mm
6	Min.line width	0.075mm(3mil)
7	Min.line spaceing	0.075mm(3mil)
8	Surface finish/treatment	HALS/HALS lead free, Chemical tin, Chemical Gold, Immersion gold, Inmersion Silver/Gold, Osp, Gold Plating
9	Copper thickness	0.5-4.0oz
10	Solder mask color	Green /black/white/red/blue/yellow
11	Inner packing	Vacuum packing, Plastic bag
12	Outer packing	Standard carton packing
13	Hole tolerance	PTH:+_0.076,NTPH:+_0.05
14	Certificate	,ISO9001, ROHS, Fcc
15	Profiling Punching	Routing, V-CUT, Beveling
16	Assembly Service	Providing OEM service to all sorts of printed circuit board assembly

 2.Detailed Terms for Pcb AssemblyTechnical requirement: 1) Professional Surface-mounting and Through-hole soldering Technology2) Various sizes like precision0402, 0603, 0805, 1210 and 2512 components SMT technology3) ICT(In Circuit Test),FCT(Functional Circuit Test) technology.4) PCB Assembly With CE,FCC,Rohs Approval5) Nitrogen gas reflow soldering technology for SMT.6) High Standard SMT & Solder Assembly Line7) High density interconnected board placement technology capacity. Quote requirement: 1)Gerber files of the bare PC board
2)BOM file (Components List): manufacturer's part number, type of part, packaging type, component locations and quantity
3)Dimensional specification for non-standard components
4)Assembly drawing
5)Final test procedures (if applicable)
6)in order to shorten the lead time, please advise us alternative parts (same specifications but different brand name)
7)Estimated order quantity
8)If possible, please send prototype/sample board/photo to us for further reference