Beijing Aurora Safety & Protection Technology Ltd. (ASP) has professional technical background of optical-electric, laboratory, coating centre for research-development and production. ASP devote to auto-darkening welding filters research and production. All products are self-develop and design, adopt single-chip circuit, software control technology and best components. ASP's Switch-time and Shade control accurate. Temperature range compensation overtop EN379 professional standard, suitable for more atrocious climate and welding circumstance.

ASP also design and product new generation Digital ADF series products which at the edge of the world. The research production obtain many Chinese patent, and proved by safety test of DIN CERTCO and ECS Germany. The products have CE certificate issued by DIN CERTCO and ECS Germany and sale to many countries all over the world.
Because of the professional technical strength and research in the highest flight position. ASP is appointed to be the constituter of Chinese Auto-Darkening Welding Helmet National Standard. The standard have been approved by Expert Group and will be issued in China.