Electronics production
Four high-speed SMT lines support PCBA manufacturing, inspection and assembly-ready delivery.
Smart lock manufacturing
Manufacturing Capability for Smart Lock Programs
YOUNUO IET connects SMT and PCBA production, smart lock assembly, reliability testing, final inspection and export packing in one controlled Shenzhen manufacturing workflow.
Finished-lock assembly
Configured panels, mortises, modules and firmware are integrated and checked by model.
Export quality handoff
Aging, final inspection, buyer documents and packing are coordinated before shipment.
Real factory evidence
High-speed SMT production line 
PCBA functional inspection 
Finished smart lock assembly
Production scope
From Board-Level Production to Export-Ready Smart Locks
Buyers can evaluate the complete manufacturing chain instead of reviewing isolated workshop claims.
SMT & PCBA Production
Solder paste, placement, reflow and board-level process control.
Component & Board Inspection
Incoming components, soldering quality and PCBA function are checked.
Smart Lock Assembly
Panels, mortises, fingerprint modules and wiring are integrated by model.
Functional & Aging Testing
Unlocking, communication, power behavior and repeated operation are verified.
Final Inspection
Appearance, accessories, labels and approved configuration are checked before packing.
Export Packing & Handoff
Buyer documents, packing configuration and shipment readiness are confirmed.
Real factory evidence
Production and Reliability Evidence Buyers Can Review
Real production photos and factory footage show the work areas behind board production, finished-lock assembly and reliability control.
Controlled project handoff
Manufacturing Aligned to Approved Samples and Buyer Requirements
Each order is managed against the confirmed model, specification, firmware scope, packaging requirement and quality checkpoints before mass delivery.
Approved specification baseline
Model, access methods, electronics, finish and package contents are confirmed before production.
Production and QA checkpoints
Board, assembly, function, aging and final-inspection records follow the approved order scope.
Buyer documentation
Manuals, labels, packing lists and export documents are coordinated for the destination market.
Shipment and after-sales handoff
Final release, packing evidence and technical follow-up are aligned before shipment.
Supplier evaluation
Review Your Smart Lock Manufacturing Program With YOUNUO
Share the target model, destination market, annual volume, protocol, customization scope and local assembly requirement for a manufacturing review.