How about Yichang and Andun fire protection?

Okay.

1. It has independently developed nanoparticle fire extinguishing technology, in-situ reaction generation nano dry powder technology, hot aerosol physical and chemical self-cooling technology, and continues technological innovation in the field of automatic fire extinguishing.

2. Communicate scientific research product results, testing reports and certifications with domestic and international key national firefighting field institutions, and successfully obtained 31 certifications, and obtained 170 domestic and foreign patents.