User needs analysis 1. The basic characteristics of user needs. (1) The volume is large and wide. It can be said that all industries in the national economy are inseparable from low-voltage electrical appliances. People's daily life is also inseparable from low-voltage electrical appliances. (2) Variety of specifications (voltage, current, protection, number of poles), complex environmental conditions (altitude, temperature, humidity, pollution, etc.). (3) Users pay more and more attention to the quality (appearance, reliability, life, volume, etc.) of low-voltage electrical appliances. Products with low quality and low prices are popular. 2. Demand structure. The demand structure of low-voltage electrical products varies from industry to industry, but generally has the following rules: First, the ratio of frame type circuit breakers to molded case circuit breakers is about 1:9. Second, the use of high current level products is relatively small (such as less than 1600A circuit breakers, less than 3000A), while 100A and below products are very large, and small molded case circuit breakers use more. Third, the use of low-voltage electrical products such as starters, fuses, contactors, thermal relays, and signal lights for protecting motors is very large. Fourth, the self-control industry and the electric drive industry have very large quantities of contactors, fuses, limit switches, travel switches, buttons, and signal lights. Fifth, the number of vacuum circuit breaker products used in the mining and coal chemical industries is large. Kitchen & Bathroom Accessories Kitchen & Bathroom Accessories,Stainless Floor Drain,Bathroom Bidet Sprayer,Bathroom Jet Sprayer Kit kaiping aida sanitary ware technology co.,ltd , https://www.aidafaucet.com