PCB manufacture and assembly service required Buyer and Importer

Dear Sir/Madam,This is Yao MingKuo from Buenos Aires, Argentina.I'm looking for products with the following specifications: Number of Layers : 4-Layer, FR4 Thickness: 1,5 mm Stackup: include in the attachment Termination: HASL / Lead Free HASL Minimum Clearance: 5 mils Vias: 16/25 mils Minimum Track: 5 mils Serigraphy: TOP and BOTTOM Size: 35 mm x 45 mm Application : IoTI need an One stop service: components sourcing, PCB manufactury and assembly. This product is in prototype phase, then it will scale to mass production.r, FR4 Thickness: 1,5 mm Stackup: include in the attachment Termination: HASL / Lead Free HASL Minimum Clearance: 5 mils Vias: 16/25 mils Minimum Track: 5 mils Serigraphy: TOP and BOTTOM Size: 35 mm x 45 mm Application : IoTI need an One stop service: components sourcing, PCB manufactury and assembly. This product is in prototype phase, then it will scale to mass production. Show More