Dear 
 
How are you ?
 
As we know from your website that your product may need PCB ,so we are writing this email to wish there is the chance to cooperate with you .
We are a professional PCB/PCBA manufacturer in China and be good at doing all kinds of boards including Fr4,Rogers ,Aluminum,HDI ,rigid-flex and so on .
 
Please give us your feedback about this promotion once available. And hope we can help you .
 
Best regards,
Amy Yang