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FAQ about Winow

FAQ about Winow

Why Choose us?

Winow is a famous electronic manufacturing service manufacturer in China.We provide one-stop services such as PCB manufacturingPCB assembly as well as component purchase ,so that it could save your time and shipping cost. Winow also  pays great attention to quality, has a strict quality management system, and have passed  ISO19001 ,UL certification.Beside,winow has a complete after-sales service system.

What is your turnkey order Lead time?

The final lead time is the purchase lead time plus the assembly lead time. However, we try to shorten the timeline by simplifying resources. For example, once we receive your gerber documents for PCB manufacturing and assembling BOM, we will start preparing templates and purchasing your outsourced parts.

What is your testing policy and how you controle the quality?
For PCB Fabrication sample, usually tested by flying probe; for PCB Volume over 3 square meters, usually tested by fixture, this will be more faster. Due to there’s many steps to PCB production, we usually do inspection after every step.

For PCB Assembly,we got such IQC(incoming material check),IPQC,CQA quality control system,in addtion,we got a series of test equipment including ICT inspection,funtional test etc.

What is your certificate?

 ISO9001, ISO14001, UL, RoHS report. We can provide the report of raw material based on customer’s requirement.

What is your package?

 With Inner vacuum package and out carton.

 What is your produce shipment?

This is depend on customer, sometimes we ship through our forwarder, who is also the agency of DHL, TNT, UPS, Fedex, and so on. Our forwarder can provide too much better freight cost than we get directly from those express enterprise.

What is your produce ability?
Our pcb ability is average 20,000 square meters per month.

As for  pcba ability, we got 6 SMT line for assembly

I only have the pcb sample, not pcb file, can you produce it for me?

Yes, we can copy file based on your sample, this file names gerber, and production then is accorded to gerber file.

Can you design gerber file?


What kind of PCB file format can you accept for production? What CAM software do you use?

We accept Gerber file for production. CAM350, GENESIS, UCAM, GC-CAM, V-2000.

Will you allow me to put several part number together into one panel?

Yes, this is usually happen in we factory, this way can help customers reduce some cost and to a certain degree, it can help reduce some assembly cost.

What material brand you use for your PCB?

What is your minimum order quantity?

We have no limitation on MOQ, prototype, medium volume and large volume are all acceptable.

Will RoHS Lead-Free Custom Spec. Boards be marked with lead-free symbol?

Yes,but need customer to specify this requirement in file.

.Are my design files safe when I submit them to you for manufacturing?

Any customer’s file will be protected very well here in we factory and not let any third party know. We can sign NDA with you.

                 FAQ on pcb design and technical issues

 About the hole size. Would be submitted hole size be the final hole size ?

Yes, the submitted hole size is the final hole size within a tolerance of 1 mil. 

What are the available holes sizes?

14 mils to 150 mils - 1 mil increments
150 mils to 200 mils - 5 mil increments
above 200 mils - holes would be routed out

We only use drills in imperial units. Files submitted in metric units (mm)  would be converted to imperial units (mils) and rounded up to the next mil.

I am used to designing in metric units while the website is specified in imperial units. Is there a conversion chart I can refer to ?

When requesting a This e-mail address is being protected from spambots. You need JavaScript enabled to view it , the quote form can handle mm units as well as inches for dimensions.

How do I specify internal cutouts/milling in my design?

All internal cutouts/slots/milling should be specified on the same layer is the board outline. The the minimum routable slot size is 32 mils. During order time, please state this requirement in the "Special Request" section so that our CAM engineers is aware of it. This is not something we encounter often - so there are chances we may overlook it. Make sure it's known to us.

Do you allow multiple design per setup?

No. Only 1 design per setup is allowed

FAQ on online order process

The rates on this website is quoted in which currency?

US Dollars (USD).  

What is the daily cutoff time?

To make it for the day's order, the order must be placed by 1 pm local time . All orders placed after that time would be considered next day's order. 

What is the difference between PCB Prototype and Production order?

Our prototype service works on pooling a few designs and fabricating it under 1 setup. This makes it cheaper per part number for small quantity runs. But the fabrication setup is fixed to a standard specification and not reusable.

Production service runs on setup unique to your part number and reusable over many runs. With production run, you can configure your PCB to be built with custom materials. Production Run setups will be kept for minimum of 6 months.

Do I need send my Credit Card details during order time? I am uncertain if my design meets the fabrication requirement.

No, that is not required. We will not request for order payment until we review and verify that your PCB design file meets our design rule requirement. If the design requires further revision, we will recommend to you the changes required to meet our design rules. We will only request for payment when we are certain that the PCB design file given to us is complete and that it meets our design rule requirement.

When your cost is so low, how do I know if the quality of your PCB meets our requirement or that your service is good?

Good question! We can provide samples for your testing based FOC.


FAQ for company Purchase Order process

My company can only place an  order with Purchase Order system and will be paying through bank transfer. Can you accept this type of order ?

Yes we can, but try to keep the order value above USD 250.00. We may, at our digression, bill you an additional USD 30.00 for bank charges/commission. The banking charges varies from country to country.

We would avoid dealing with bank transfer whenever possible (especially for small orders) due to all the additional administrative overhead involved and uncertainty in how much we really do receive after banks take their commissions and fees.  

My company just issued a Purchase Order, what is the next step in placing the order?

Write us email to This e-mail address is being protected from spambots. You need JavaScript enabled to view it  The relevant sales will contact with you soon.

Do you offer Credit Term?

In general, yes. Normally net 30days.                                                                                                                                                                                                              With my company, obtaining a Purchase Order and payment  can take some time. Can you fabricate the boards in advance prior to receiving the payment ?

Yes, we can do that. Just let us know about this situation under the"special request" section of order form. We often get started onproduction upon placement of order.As long as the we know the order is firm and payment is on its way, we can get started on the job immediately.

More often than not, by the time the purchase requisition is processed, the boards will be ready to ship. Unlike other PCB companies, we place trust in our customers and will start work even before money is paid.

FAQ about PCB Specification

For the PCB Prototype service, can I specify different material or copper thickness ?

Yes, that is ok.

What is Custom Specification PCB ?

Any build specification that is not 0.062" FR4 1 oz copper, HASL finishing, White Silkscreen, Green Soldermask.

                   FAQ about PCB Assembly

Can you handle lead-free construction?

Yes, we have two additional lead-free PCB assembly lines.

what is the ensurance that your component sourcing service?

Winow manager are most  from world famous enterprise with more than 15 years   Electronic industry experience.They have vast network . so we have multiple PCB component parter with high quality and low cost for you. 

Can you do partial assembly?

Yes, we can do partial assembly as well as turnkey assembly,we have great fexibility  to meet our client 's requirement.Please indicate "not included" in the BOM to tell us which components you do not want to place

                          FAQ about shipping

How long does shipping take ?

It depends on the destination location. In most parts of the developed world, delivery by FedEx/DHL is normally 2 days (excluding weekends) . For example, if we ship out the PCB on our Monday, it will arrive to customer at destination Wednesday .

Shipment to some regions such as Middle East, South America and Africa may take up to 4-5 working days.  

Is there any faster service available ? Overnight perhaps?

Shipments within China is delivered overnight by default. For shipment to all other countries, the quickest available service is the standard 2 working day FedEx/DHL International Priority.

How much does a PCB normally weight ? How much can I ship in a 1 lbs (0.5kg) shipment ?

On the average, 100 sqinch of 0.062" FR4 PCB will weight  0.4 lbs to 0.55 lbs depending on configuration. Due to weight of packaging material (0.3 lbs) only 0.7 lbs of PCB can be included in the first lbs of shipment.

In some cases, such as tab-routed or v-scored panels - the panel support boards (to avoid breakage during shipping) may add to the shipping weight.  To help our customer save on shipping cost, we will always use the lightest and smallest packaging method. 

Your shipping rate is much lower than similar businesses in Asia and Europe. Why is it so?

We practice an honest shipping costing. If FedEx bill us $10, we bill our customer $10. Most other PCB business in this region uses low price to bait customers in only to hit them with this excessive shipping and handling cost. So while some competitors may appear to cost less than us at a glance.  But when you add it all up, the total shipped cost will often be higher than our total shipped cost. Just beware of excessive shipping charges.

FAQ after sales

How long is my production run setup stored?

We store any production run  fabrication setup for a minimum of 6 months from last used date and can be re-extended by another 6 months on reuse. If the customer does not use the setup again within 6 months, we will contact the customer with option to keep alive the setup for a small $10 per year storage fee. This fee can be discounted on reuse of the setup.

The board that I received is not mine. What should I do with it?

In some rare occasion (1 in 2000 parcels) we tend to make mistake when sorting out PCB for delivery . If you receive a PCB that is not yours, chances are that another customer is  having your PCB. Normally the customer is within the same country as the finished PCB is sorted by country before being packed and shipped.

Please contact us immediately so we can arrange for a swap.  You just need to use our FedEx account to send the parcel to each other. Please be assured this is not a common occurrence, but it does happen.