Quality Control Methodology

Longjoin make use of a number of quality control tools to ensure the incoming materials, process and finished goods in good quality. They are namely,

FAI
Online Self-checking
Major Inspection
IPQC
End Item Inspection
Final Inspection
Traveler and Labeling

FAI (First Article Inspection)

• First articles of every shift or whenever operators change takes place
• To avoid whole lot failure
• Find out problems at the earliest stage
• Triple inspection
  operation's self-checking
  Line foreman's checking
  Inspector's inspection

Online Self-checking

• Operators check their own our works from time to time during productions
• Find out problems at the earliest stage
• Help operators better understand the standards

Major Inspection

• For some major inspection items, 100% full check will be applied
• Major inspection items - potential failures causing impact to safety, function and assembly structure
• Dedicated inspectors or fixtures would be used

IPQC (In-Process Quality Control)

• In production random check
• To find out problems caused by operators, machines, tools and process
• Indentify problems at the operation level

End Item Inspection

• Essential for parts made by moldings and fixtures
• Inspecting the last item of the mass production
• To ensure moldings and fixtures in good conditions after a run
• Done collaboratively by operators and inspectors

Final Inspection

• The final keeper – preventing NG from going out
• Completion of batch of F/G
• Sampling or full check

Traveler and Labeling

• Traveler to keep track of the operator, inspector, date, shift, serial number, etc.
• Various labels, categorized in different colours, to identify materials, sub-aseemblies and goods in different stages

Quality Certifications and Continuous Improvement at a Glance

• ISO9001:2008
  Acquired ISO9001:2008, Longjoin operates fully following ISO9001 system
• UL, CE, 3C
  Have successfully passed UL, CE and 3C audits and qualified as UL, CE and 3C products maker
• IPC-A-610
  Inspection standard used is based on customer requirements and following IPC-A-610
• RoHS Implementation and Control
  RoHS implemented in the areas of incoming materials control, production process, facility, test and inspection
• PDCA
  P (Plan) – planning based on customer requirement
  D (Do) – do the work per the plan
  C (Check) – check the goods and process per the plan
  A (Act) – analyze and continuous improve
  Use PDCA as a tool to monitor and solve quality issues
• Quality Improvement Team
  Formed to push for continous quality improvment with team members – from operators to General Manager
  Statistical analysis and PDCA are useful tools