انجمن صنفی تولیدکنندگان لوله و اتصالات پلی اتیلن

A research team from Los Alamos National Laboratory published a paper in the journal Nature Energy this week that demonstrates an effective method for scaling up quantum dot solar power technology from production models to full-sized windows that could power a building.

Bicycle tires are a weak link in the cycling world. They fail when you need them the most and can be a pain to repair. More often than not, a flat tire is the death sentence for a bicycle whose owner doesn’t have the tools or the know-how to fix the flat