Zhigu's factory rims stand out for their forging excellence, utilizing 6061-T6 aluminum billets forged at 450°C under 8000 tons of pressure to create a uniform grain structure. This process eliminates porosity, resulting in rims that pass 1.5x the JWL/VIA impact test standards (13° impact with 900kg weight). The rim portfolio includes: monoblock rims for OEM reliability, 2-piece rims with removable outer lips for width customization, and 3-piece rims with interchangeable inner/outer rims for extreme offsets. Specialized designs include deep concave rims (up to 110mm offset), anti-corrosion off-road rims with triple-layer powder coating, and flow-formed rims for enhanced strength-to-weight ratio. The factory's automated production line achieves a daily output of 500 units, with strict QC checks at each stage—from raw material chemical composition analysis to final 3D coordinate measuring machine (CMM) inspection.