I am Abby from Cesgate Technology Company. HDI products of the company have achieved mass production, second-order and third-order mass production, and reached advanced level in key technologies such as high-order HDI, rigid-flexible combination, fine line, and interlayer alignment controlFAQQuestion 1: What is needed for a quotation?Answer, PCB: QTY, Gerber file, and Technical Requirements( material/surface finish treatment/copper thickness/board thickness,...)PCBA: PCB information, BOM,(Testing documents...)Q2: What file formats do you accept for production?A, Gerber file BOM Q3: Are my files safe?A,Your files are held completely safe and secure. We protect the IP for our customers in the whole process. All documents from customers are never shared with any 3rd parties.