011
Layers
2 to 8, rigid only
PCB Capabilities — The Full Specification
Everything on this page is a number we build to. If your design sits outside one of them, ask — the answer comes from an engineer, not a sales script.
022
Base materials
FR-4 (Shengyi, Kingboard), CEM-3
033
Minimum trace width / spacing
0.075 mm (approx. 3 mil)
044
Maximum copper thickness
Up to 3 oz
055
Surface finishes
ENIG, lead-free HASL, OSP, flash gold
066
Minimum finished hole size
0.2 mm
077
Hole tolerance
PTH ±0.075 mm · NPTH ±0.05 mm
088
Multilayer board thickness
0.4 to 3.2 mm
099
Alignment tolerance
±0.05 mm
1010
Minimum solder mask bridge
0.085 mm
1111
Solder mask inks
Taiyo, RongDa, KuangShun
1212
Environmental options
Lead-free and halogen-free builds available
1313
Quality standard
IPC-A-600H Class 2
1414
Testing
Electrical test, AOI and final visual inspection in the standard flow
See the production floor
19 photos from the lines and test benches
Every board is electrically tested and inspected before dispatch — flying-probe and automated testing, AOI and final visual inspection are part of the standard production flow.
Get a price on your board
Email your Gerber and drill files to midst_zhong@126.com with layers, thickness, copper, finish and quantity — or start with the form and just the basics. Free engineer DFM check with every quote.
Get a manual quote
Inside the production floor
The lines and test benches your boards pass through — plating, imaging, profiling and electrical test are all in the standard flow.
Plating line
PTH line
LDI imaging
Solder mask exposure
AOI inspection
Legend printing
V-cut scoring
CNC routing
Punch blanking
Flying probe test
Automated test
Dimensional measurement
X-ray inspection
Impedance test
Final visual inspection (AVI)
Electrical test hall
Silkscreen printing
