01 Magnified Terminal Inspection
Magnified viewing helps examine visible details of terminals and their connection areas for workmanship. It is separate from destructive cross-section analysis.
QUALITY ASSURANCE
Quality checks.
From materials to finished assemblies.
Incoming material checks and production inspections lead to continuity and pinout checks on every finished assembly, together with visual inspection and applicable dimensional checks.
PROCESS CONTROL
Quality control at each stage.
Shengxin combines automated production with operator inspection to support repeatable batch manufacturing. Checks begin with incoming materials and continue through production and finished-assembly inspection.
- 01
Incoming materials
Wire and components are checked against requirements. Connector insertion and withdrawal force is checked against the corresponding specification, using 5–15 samples per batch.
- 02
First-piece inspection
Before production, first-piece checks follow the product characteristics and agreed drawing or sample. Terminal crimp pull-out testing uses 5 samples per batch.
- 03
In-process inspection
Checks every two hours cover wire and component specifications, wire sequence and terminal pull force. A nonconforming result stops production; a new first-piece inspection must pass before production resumes.
- 04
Finished-assembly inspection
Every harness receives continuity and pinout checks, with visual and applicable dimensional inspection. Inspection reports accompany shipments.
Continuity and pinout checks on a wire assembly.
ROUTINE FINISHED-ASSEMBLY CHECKS
Every finished assembly. Checked.
100%Continuity & Pinout Testing
- Continuity: Checking the intended electrical connections.
- Pinout: Checking connections against the specified wiring arrangement.
- Visual inspection: Checking visible assembly condition and workmanship.
- Dimensions: Checking applicable dimensions against the drawing, including specified branch lengths, take-off positions and protection placement.
Inspecting terminals on a white-wire assembly.
Checking red and white terminal-wire assemblies.
Reviewing yellow connector ends on bundled wires.
ADDITIONAL PROJECT-SPECIFIC CHECKS
A closer look at connection quality.
Additional checks are selected according to the product, project requirements and applicable inspection plan. The methods shown do not imply that every check is performed on every assembly.
02 Crimp Cross-Section
A prepared terminal cross-section is examined for conductor distribution and crimp formation. Preparation is destructive, so this check applies to project samples.
03 Insertion & Withdrawal Force
Connector mating and unmating force is checked during incoming inspection against the corresponding specification. Terminal crimp pull-out testing uses a separate machine during pre-production first-piece confirmation.
04 Salt Spray Testing
Salt spray exposure evaluates corrosion resistance of specified metal terminals or connection components. Scope is set by the project requirements.
05 RoHS Screening
Screening checks a material sample for selected restricted elements. Instrument screening is preliminary and is not a complete RoHS compliance certification.
PROJECT REQUIREMENTS
Inspection matched to your specification.
Workmanship and acceptance criteria
Drawings, approved samples and applicable component specifications define the inspection requirements.
IPC/WHMA-A-620 sets out requirements and acceptance criteria for cable and wire harness assemblies. If your project specifies this standard, share the required revision and class so we can review the applicable criteria before production.
Material compliance requirements
RoHS- and REACH-related documentation and testing can be arranged according to project requirements. The applicable materials, testing scope and required reports are reviewed before confirmation.
DOCUMENTATION
Certifications & UL documentation.
The ISO documents identify Shenzhen Sheng Xin Electronics Co., Ltd. and show the management-system scopes below. The UL documents are component-category records; they do not establish certification of every finished assembly. Open each original for its complete wording.
ISO 9001
Quality management system · Production and sales service of the terminal wires.
View document
ISO 14001
Environmental management system · Production and sales services and related management activities of terminal cables.
View document
UL Processed Wire
Component category · File E348819 · Supplied directory record last updated 15 May 2022.
View document
UL Wiring Harnesses
Component category · File E497353 · Supplied directory record last updated 15 May 2022.
View documentBUYER FAQ
Questions about inspection.
When do electrical checks take place for products requiring finishing?
For products requiring adhesive dispensing, curing or heat shrinking, electrical checks take place before these operations. Any requirement for a further electrical check after finishing needs to be agreed during project review.
What is checked on every finished assembly?
Every finished assembly receives continuity, pinout and visual checks, together with applicable dimensional inspection. These routine checks do not mean that every possible electrical or destructive test is performed on every piece.
Are pull tests and cross-section checks performed on every piece?
No. Mechanical testing and crimp cross-section analysis are sampled or performed when specified for the project. Sectioning a terminal is destructive, so it is separate from routine checks on each finished assembly.
Can inspection follow our drawing or specified acceptance criteria?
Yes. Drawings, approved samples and applicable component specifications provide the reference. Share any additional criteria, sampling requirements and required revision so the scope can be reviewed before production.
Can we request inspection documents or material-compliance testing?
Inspection reports accompany shipments. Inspection equipment is calibrated periodically, and relevant records are available on request. Share any additional document or material-compliance requirements for review. Instrument screening alone does not constitute RoHS certification.
YOUR NEXT ASSEMBLY STARTS HERE
Tell us what your assembly needs to meet.
Share your drawing, pinout and inspection requirements so we can review the appropriate checks for your project.