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12184 4oz pcb products are offered for sale by suppliers on Alibaba.com, of which other pcb & pcba accounts for 42%, pcba accounts for 35%, and ckd kits and parts accounts for 1%. A wide variety of 4oz pcb options are available to you, such as factory, odm and oem/odm.You can also choose from electronic device, communication and oem electronic 4oz pcb,As well as from hasl, hasl lead free 4oz pcb,