1-40 Layers Rigid PCB, Multilayer PCB with HASL PCB Factory Multilayer PCB Circuit Boards. High Precision: Capable of 0.075mm minimum line and space with 16:1 aspect ratio. Fast Turnaround: Double-sided boards available in 24 hours; 4-layer in 48 hours. Large Capacity: Monthly production capacity up to 50,000 square meters. Comprehensive Finishes: Offers HASL, ENIG, OSP, Gold Finger, and immersion silver. 24/7 Support: Round-the-clock technical support, order service, and delivery.