We believe that long time period partnership is a result of top of the range, value added services, rich expertise and personal contact for 4 Layer Circuit Board, PCB Board Assembly , MID PCB , Green Solder Mask PCB , We have ISO 9001 Certification and qualified this product .over 16 years experiences in manufacturing and designing, so our products featured with best quality and competitive price. Welcome cooperation with us! We take "customer-friendly, quality-oriented, integrative, innovative" as objectives. "Truth and honesty" is our administration ideal for 4 Layer Circuit Board, Our company insists on the purpose of "takes service priority for standard, quality guarantee for the brand, do business in good faith, to offer skilled, rapid, accurate and timely service for you". We welcome old and new customers to negotiate with us. We are going to serve you with all sincerity!