Shanghai Yunbao Trading Co. Ltd.
Shanghai Yunbao Trading Co. Ltd.
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Custom design pcb clone small electronics printed circuit boards
Our One-Stop Service for PCB & PCB Assembly manufacturing:
1. Quick Quotation - Competitive factory direct price is always offered
2. Free Sample - Sample for free before mass production
3. Quality Control - Complete test procedure is necessary
4. On Time Delivery - Customize the logistics plan according to customer's requirement
5. After-sale Service - Reply to the claim within 24 hours to make sure our customer's manufacturing
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Factory & Equipments
How to get quick quotation?
Step 1. Please send us Gerber file with these format: .CAD/ .Gerber/ .PCB / .DXP/ .P-CAD, etc;
Step 2. Also please provide us the below details for quick quotation:
a) Board material: Fr-4/ CEM-1/ CEM-3/ SY/ KB/ Rogers/High Tg/ copper based/ aluminum based, etc;
b) Board thickness: 0.1-6.0mm;
c) Copper thickness: 0.05 Oz-8Oz (17um-288um)
d) Surface Treatment: OSP/ ENIG/ HASL/ Lead Free HASL/ Immersion Tin/ Immersion Sin
e) Color of solder mask and silk print: Green/ red/ blue/ black/ white/ yellow
f) Board size and quantity
g) BOM(Bill of Materials) list if PCB Assembly
P.S. If you don't have Gerber file, please provide us the imfomation as step 2 or send your PCB Board to us for clone.
FAQ (Frequently Asked Questions):
Q: Why we can trust your products?
A: What LEFANG's vision is to Make Our Customer's Products Better, so we try our best to fulfill the quality control system andenvironmental management system. Our approved certification including ISO9001:2008, ISO14001:2004, ISO/TS16949:2009, OHSAS18000, UL, RoHS, QC080000, CQC.
Q: What's your Lead Time?
A: The below lead time for your reference:
| Layer count | Sample lead time/workday | Batch lead time/workday |
| 1-2L | 2 | 6 |
| 4L | 5 | 8 |
| 6L | 5 | 9 |
| 8L | 6 | 10 |
| 10L | 8 | 10 |
| 12L | 8 | 12 |
| 14L | 10 | 15 |
| 16L | 10 | 18 |
| 18-40L | Up to difficulty, at least 18 for sample, 24 for batch | |
| HDI, Blind/Buried Hole PCB | Regular Lead Time + 3 workdays | |
Q: What's your Technical Capabilities?
A: To pursue the zero technical issue, we have employed 70 professional engineers to ensure our high quality products. And our technical capacities are as below:
| Item | Details |
| Max layer count | 20L |
| Max board thickness | 6.0mm |
| Max aspect ratio | 10:1 |
| Max copper thickness | 6OZ |
| Max dimension | 600x700mm |
| Min thickness of 4 layers PCB | 0.4mm |
| Min hole/ pad | 0.15/0.35mm |
| Hole location accuracy | +/-0.05mm |
| PTH hole tolerance | +/-0.05mm |
| Min line width and line space | 0.065/0.065mm |
| Surface treatment | HASL/HASL lead free, OSP, Immersion gold/silver/tin, gold plating (hard gold and soft gold), silver plating, tin plating, platinum plating, carbon ink, and ENEPIG(electroless nickel - electroless palladium - immersion gold) |
Q: What kinds of test function will be offered?
A: To make sure the production quality, we offer the below testing procedure to guarantee every piece of product:
1) AOI (Automated Optical Inspection)
2) Automatic short-circuit testing
3) RoHS detector
4) Dielectric tester
5) Impedance control
6) Metallographic microscope
7) Fly probe/ fixture mold
8) Visual inspection
Q: What kinds of quality Raw Materials will be used?
A: We use top raw materials as below, ensuring product quality from the source.
Board Brand: ITEQ, SY,KB, Isola, Rogers, Arlon, Nelco, Taconic, Hitachi, etc
Potion: Rohm&Haas, Atotech, Umicore
Printing Ink: Taiyo, Rongda
Dry Film: Asahi, Dupont, Etertec
Q: Can we have a factory tour?
A: Welcome to visit our factory in Guangdong! Please inform us at least a week in advance, so that we could arrange the schedule for you.
Q: How to get the free sample?
A: Please send us the Gerber file and the necessary data information for PCB prototype. Once you make an mass order, the sample fee will be deducted from the total balance.
Q: Could we choose the shipment way we prefect?
A: Sure you can. We have long-term cooperation with DHL, FEDEX, TNT and UPS. If some specific request, please let us know.