... .UL,RoHS,SGS, ISO9001:2000 4.Approved HASL PCB; PCB Boards Capability Material: FR4, High TG FR4,Halogen Free material,CEM ... slot size: 0.6mm Solder mask color: green, black, blue, white, yellow, and matt, etc. Solder mask hardness: 6H Legend/Silkscreen ... Color: white, yellow, black, etc. Surface Treatment: HAL, Lead Free HAL, Immersion ...