... 3.UL,ROHS Approval PCB Assembly for ElectronicWelcome to our web site.We are specialized in manufacturing PCB &PCBA,based in ... China,Shenzhen.Specializing in Double Side PCB, Multi-Layer PCB, F4BK PCB, Ceramic PCB, Rogers PCB, Aluminum PCB.1. ... time of 7-21 days, according to quantities and PCB types.5.Lead free Materials (RoHS Compliant).6.ISO9001& ...