Product Testing

         Some film blowing manufacturers aggressively add sodium sulfate (Na₂SO₄)-priced at just 3,000 RMB/ton - as filler to cut costs. While adding 15% sodium sulfate reduces material cost by 27%, and 20% delivers savings of 36%, the apparent per-kg price drop actually increases end-user costs.

         We conducted a test on high-temperature steam-resistant PE pouches at 123°C for 60 minutes. HUAZHONG's 121°C high-temperature steam-resistant PE pouches have passed random inspections by the China State Administration for Market Regulation in 2018 and testing by the Guangzhou Quality Supervision and Testing Institute.