NEC IC Integrated Circuit UPC305C

08/20/2020

Daily maintenance and maintenance methods of ground source heat pumps

At present, many office buildings and single-family villas have installed ground source heat pumps, but you should not think that you will have nothing to worry about after installation.

08/19/2020

Inspection and Repair Method for Leakage of Air Conditioning Refrigeration System

The refrigeration system of a split air conditioner consists of a compressor, a condenser, a four-way reversing valve, a throttle, and an evaporator. Then, what if the air conditioner refrigeration system leaks? Come to okmarts.com today to find out more!

07/16/2020

How to clean the rain test box

After using the box-type rain test box, and regular cleaning is a very important work, I believe many customers will not be unfamiliar. The internal cleaning of the box-type rain test box is the top priority. Let's take a look with the editor. Cleaning items of box rain test box:

09/29/2025

Air Cooling System in Data Centers: Working Principle, Key Technologies, Pros and Cons, Application

With the rapid development of Internet technology, data centers are becoming larger and larger. In order to meet the growing data processing needs, the energy consumption of data centers is also increasing.

07/28/2022

Troubleshooting of Vane Pump

When we use vane pumps, we often encounter some vane pump failures, but we don't know how to solve them? Let me tell you something about how to solve the vane pump failures.

08/26/2020

Thirteen steps of flushing and changing oil skills, let your air compressor bid farewell to the oil tiger!

Oil-injected rotary screw air Compressors have become the mainstream of air compressors due to their advantages of stability, high efficiency, low vibration and low noise. However, the generally higher oil change frequency of oil-injected

10/13/2025

9 Types of Fan Bearing Comparison: How to Have Both Quietness and Longevity?

Quietness and longevity have always been two very important performance parameters in the PC heat dissipation field, and the fan can be said to be the biggest source of noise inside the entire computer case.

07/07/2020

Earth Hour: Hitachi Central Air Conditioner works with you to speak for the earth

08/11/2021

How to Tell if Your Refrigerator Compressor is Bad

The refrigerator malfunction may be caused by the refrigeration system or the electrical system. When judging the compressor fault

08/19/2020

How many years should the household radiator be replaced

I believe that old users of radiators have this feeling that the home is not as warm as a year. 　　 What is going on? Since the radiator itself does not have a clear service life, many residents do not know when to