How to clean and maintain high-speed doors

The high-speed door is a new type of door that changes the complex switching process of the traditional door, making it easier and safer to enter and exit the living room. Let's take a look at the cleaning and maintenance of high-speed doors. 1. The high-speed door is made of a passivation fi.....

I have to wash my car after the rain.

HHCMS-200 carbon molecular sieves CMS-200 is a new kind of non-polar adsorbent specially designed for extracting nitrogen-rich gas from air. It is suitable for separating nitrogen from air. It has a high adsorption capacity for oxygen and can separate nitrogen from air. The most notable feature .....