quality control

Luo Yi is process-driven and responds precisely to customer needs

Luo Yi’s service process is centered on client needs, with standardized operating procedure (SOP) documentation to ensure that project execution is highly consistent with client standards. We use process control as the cornerstone to create an efficient, traceable and replicable delivery system.


We embed unified testing standard documents in every key stage of engineering, assembly and quality inspection. This integrated standard system ensures seamless integration of all stages, improves overall efficiency, reduces the risk of error, and provides customers with a more stable and reliable supply guarantee.

Cell Phone Case Refurbishment Process

Customer Order Placement
Adhesive Removal
Water Rinsing
Deoxidation Treatment
Polishing
Hanging
Anodizing
White Conductive Area Engraving
Point A soldering
Auxiliary Material Pasting & Assembly

Cell Phone Case Inspection Process

First Article Inspection
(by Operator)
First Article Inspection
(by QC Engineer)
Inspection Record
Testing, Cleaning & Packaging
Final Quality Inspection (FQI)
Passed – Shipment Failed – Scrap Disposal