Choun Yi offers a fully vertically integrated service — from design development and tooling to mass production and quality management — turning your product concept into reality, safely and precisely.
We start by understanding your brand positioning, application, and budget. Defense/military programs can begin with an NDA on request.
Working from customer drawings or concept sketches, we confirm steel, hardness, tolerances, and finish specs, with DFM feedback from our engineering team.
First-article samples are produced for customer review of feel, appearance, and function — with fast iteration to shorten development time.
Once the sample is approved, engineering change notices (ECNs) capture any refinements, with drawings and inspection standards updated in sync.
Production tooling is built to the finalized drawing, followed by a trial run to validate process stability and yield.
After First Article Inspection (FAI) sign-off, the project transitions into the production schedule, with ongoing yield and lead-time tracking.
High-precision stamping sets the dimensional tolerance foundation.
Achieves specified hardness per steel grade, balancing toughness and wear resistance.
Multi-axis CNC machining paired with precision water grinding for exact geometry and edges.
Sandblasting, chrome plating, anodizing, and PVD/DLC coating — fully integrated with partner processes.
Precision assembly of composite metal parts, gated by rigorous QC inspection on every batch.
Serving customers directly in North America, Europe, Southeast Asia, the Middle East, and Oceania.
From incoming material to final shipment, every stage is governed by standardized inspection procedures — ensuring every batch meets customer specs and international market requirements.
Steel composition and hardness spot-checks control raw material quality from the source.
Spot inspections at blanking, heat treatment, and CNC stages catch anomalies in real time.
Full or sample inspection runs in parallel, executed to the customer's AQL standard.
Raw-material lot numbers, process records, and inspection data are retained end-to-end for full traceability.
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