Quality Control
Adhering to a quality policy of integrity and the pursuit of excellence, Dalian Petrochemical has established a comprehensive quality control system covering the entire chain—from raw material intake and the production process to the dispatch of finished goods. The company implements internal control standards that are stricter than national and industry benchmarks and utilizes online monitoring and specialized testing equipment to track process parameters in real time, consistently maintaining a 100% product pass rate upon dispatch. Through continuous process optimization and quality risk assessments, the company narrows the fluctuation range of product specifications and ensures stable performance for products such as paraffin wax and polypropylene, thereby solidifying its quality foundation through standardized management.
Three-Stage Quality System
Incoming Inspection
Every raw material batch tested against specifications before entering production. Certificate of Analysis verified for all suppliers.
In-Process Monitoring
Real-time process parameter monitoring with DCS systems. Automated sampling and testing at critical control points throughout production.
Final Release
Comprehensive end-product testing against international standards. Batch release only after all specifications are confirmed and documented.
Testing Methods & Standards
Chromatographic Analysis
HPLC and GC-MS analysis for purity, impurity profiling, and molecular identification per USP and EP standards.
Wet Chemistry
Classical titration, gravimetric, and colorimetric methods for assay determination and limit testing.
Physical Testing
Comprehensive physical property measurement including viscosity, density, refractive index, and particle size distribution.
Stability Studies
Long-term and accelerated stability testing per ICH guidelines ensuring product quality throughout shelf life.
Quality Without Compromise
Guided by customer needs and committed to upholding quality promises, the company leverages a seasoned technical service team to provide timely responses regarding product selection, specification adjustments, and technical consultations. By continuously aligning with downstream application scenarios, optimizing product specifications to meet specific demands, and refining after-sales communication mechanisms, the company ensures integrity in contract fulfillment and supply stability. Through reliable products and professional services, it fosters long-term partnerships and builds a trusted brand in petrochemical manufacturing.
