Quality Control
"We deliver only the highest quality products to our customers through thorough quality inspection."
Thorough Quality Control is NPK's strongest competitive advantage recognized in the global market. We go
beyond simple defect screening to pursue 'Zero Defect' by implementing advanced quality management
systems across all processes from raw material receiving to finished product shipment.
Based on
the latest precision analysis equipment and skilled professional research personnel, we rigorously test
mechanical, thermal, and chemical properties, and fully comply with global environmental regulations. We
promise the highest level of compound materials that 100% satisfy even our customers' most demanding
specifications.
IQC Incoming Quality Control
We conduct thorough preliminary physical property testing and hazardous substance screening to ensure only high-quality raw materials and additives that pass strict internal standards are used.
PQC Process Quality Control
We perform real-time production line monitoring and periodic sampling analysis through the latest equipment to minimize process deviation and maintain uniform quality.
OQC Outgoing Quality Control
Only products that pass final physical property and appearance precision inspection for customer-specific specifications such as tensile strength, impact strength, heat resistance, and color matching are shipped.
Reliability Test Regulatory Compliance
We conduct long-term durability evaluations in harsh environments and perform regular analyses to fully comply with global eco-friendly regulations such as RoHS and REACH.
Testing Equipment
| Category | Equipment List |
|---|---|
| ASTM Test Equipment |
Melt Flow Indexer, Izod Impact Tester, Universal Testing M/C, HDT Tester, Muffle
Furnace Gloss Meter, Rockwell Hardness Tester, Durometer Hardness Tester, Haze Meter |
| ISO Test Equipment |
Melt Volume Indexer, Izod Impact Tester, Universal Testing M/C, HDT Tester Charpy Impact Tester, Softening Point Tester |
| Common Equipment |
Surface Resistance Meter, Density Determination Kit, Benchtop Spectrophotometer,
Electric Sieve Shaker Constant Temperature and Humidity Chamber, ED-XRF, Notching M/C, Injection M/C Dry Oven, Karl Fischer, Loss on Drying Tester, UL 94 Flammability Tester, Microscope With Camera Multilight, Thermogravimetric Analyzer |
