BackgroundNasopharyngeal carcinoma (NPC) is a rare disease that is strongly associated with exposure to the Epstein-Barr virus and is characterized by the formation of malignant cells in nasopharynx tissues. Early diagnosis of NPC is often difficult owing to the location of initial tumor sites and the nonspecificity of initial symptoms. resulting in a higher frequency of advanced-stag... https://allfixelectricales.shop/product-category/vcr-idler-assembly/