According to IEC61284-1997 standards and company quality standard (HD-ZS-2002), we have established an outstanding quality guarantee system. We do this to ensure a high level of quality for our customers and also to maintain a competitive advantage by staying ahead of market demands.

After shaping is completed, the bore diameter of the preformed armor rod meets the design requirements. The thread pitch is required to be uniform, and the pitch deviation is ±5mm. The deviation of the length reaches ±2%.