I-Polyethylene Enobuningi Obuphezulu: Izixazululo Eziqinile Nezisebenzayo Isingeniso - Ukubuka konke kwe-High-Density Polyethylene (HDPE) Izinto ze-High-Density Polyethylene (HDPE) ziyipolima esetshenziswa kabanzi eyaziwa ngamandla ayo amangalisayo, ukusebenza kwayo okuhlukahlukene, nokuqina kwayo.