latest company case about Dongguan Kaiyan Hardware Products Co., Ltd. Certifications

Customer Background
A Korean electronics manufacturer specializing in communication modules contacted KAIYAN after encountering serious assembly problems with their RF shielding covers. These shielding components are used on PCB boards to protect sensitive electronic circuits from electromagnetic interference (EMI).

The Challenge
The customer had been sourcing the RF shielding covers from another supplier. However, during the SMT soldering process, they discovered that the flatness of the shielding cover exceeded 0.1mm, which caused several critical issues:

Poor contact between the shielding cover and PCB solder pads

Inconsistent solder joints during reflow soldering

Increased risk of EMI leakage due to incomplete grounding

Low assembly yield rate and higher production costs

Because the flatness deviation was too large, many parts could not be properly soldered onto the PCB, resulting in frequent rework and production delays.

KAIYAN's Engineering Solution

After receiving the customer's drawings and defective samples, KAIYAN's engineering team conducted a detailed analysis and implemented several improvements:

Precision Stamping Tool Optimization
Our engineers redesigned the stamping die structure and optimized the forming process to reduce internal stress during forming.

Material Stress Control
KAIYAN carefully selected high-quality Nickel Silver material and controlled the material hardness and thickness tolerance to ensure consistent forming performance.

Secondary Flattening Process
A precision flattening process was added after stamping to correct micro-deformation caused during forming.

Strict Quality Inspection
Each batch was inspected using precision measuring equipment to ensure flatness met the required tolerance.

Results Achieved

After implementing these improvements, KAIYAN successfully reduced the shielding cover flatness to ≤0.05mm, achieving twice the precision compared with the previous supplier.

The results for the customer were significant:

Stable SMT soldering performance

Improved grounding and EMI shielding effectiveness

Assembly yield rate increased dramatically

Reduced rework and manufacturing costs

Customer Feedback

The Korean customer confirmed that after switching to KAIYAN as their supplier, the shielding covers could be soldered smoothly on the production line with consistent quality. The improved flatness solved the long-standing welding issue and ensured reliable product performance.Zero defects found in 1000,000 pieces delivered.

Why Customers Choose KAIYAN

KAIYAN specializes in precision metal stamping components, including RF shielding covers, electrical contacts, terminals, and custom metal parts. With advanced stamping equipment, experienced engineers, and strict quality control, we help global OEM customers solve complex manufacturing challenges.

KAIYAN – Your Reliable Partner for High-Precision Metal Stamping Solutions.