Can PM2.5 focus on the Chinese auto market?

The PM2.5 monitoring data was rolled out 24 hours starting from March 9. From the overall situation after the start of monitoring, Foshan's data is not good-looking. As a hot topic of public concern, Foshan City promptly asked all districts to come up with a comprehensive system of gov

Small submersible pump troubleshooting

Symptoms the reason Method of exclusion Motor does not turn 1. The supply voltage is too low 1. Escape the peak of electricity 2. Wire thinning start voltage drop 2. Replace the wire as required 3. Centrifugal switch failure or capacitor damage 3. Adjust the centrifugal switch or replace