Dear sir,

    We are warmly welcome you join in our group in the linked In. In this group you will get many useful information about pcb factory. such as stack up,impedance cal etc. We are try to help you cut down design circle and save cost. Now, if you join in our group and discuss in the group,we will give you some reward.

1、tell me what you need in our group will get a gift.It is do lead free hasl free(value 10USD) with first order. each engineer have only one chance.

2、answer other member's question will get a big gift.It is do ENIG free(value 35USD).no upper limit.

Please forwar this mail to your pcb engineer. We could help him reduce R&D circle and cut down cost and satify your customer.