Quality defects refers to products, services or processes that do not meet the specified requirements (such as standards, specifications, contracts, etc.), the classification of its various ways, the common classification is as follows: First, according to the severity of the defects classification This is the most commonly used classification, mainly based on the defects on the product function, safety, user experience, the degree of impact of the division: 1. Fatal Defects (Critical Defects) direct Critical Defects are defects that directly cause the product to lose its core functions, have safety...