Quality control is integral to Liwei Chemical’s operations, with strict protocols covering every stage from raw material intake to finished product delivery. For PG, PO, SM, and PGE, we enforce rigorous testing against international standards (e.g., USP, EP, ASTM) to ensure consistency in purity, viscosity, and stability.

Our quality team uses real-time monitoring systems during production to detect deviations promptly. Each batch undergoes triple inspections—by production staff, quality auditors, and third-party labs—to guarantee compliance,to build trust in our product reliability.