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What is the aperture of optics and what does it affect?
Aperture, aperture, maximum relative aperture - in simple words about the main thing
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We choose reliable solar panels with high efficiency over many years and a minimum payback period
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Specifics of different types of chucks for drilling and working with fasteners
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The main factors that make new processes faster without increasing clock speeds
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Let's figure out how to choose the right combination of processor and video card to avoid a bottleneck
Best Budget SSDs for Upgrading Old Laptops
A simple, low-cost solution with a large amount of memory that will breathe new life into old computer equipment
All About Smartphone Navigation: GPS, Beidou, Galileo, and More
There are several global satellite navigation systems in the world that operate on similar principles.

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How E-Catalog works
Platform for product search & price comparison

E-Catalog is multifunctional service for searching goods in online stores and comparing prices. It has wide variety of product categories: electronics, computers, household appliances, car products, DIY and construction equipment, camping equipment, childen's goods and much more. Our task is to help buyer quickly and conveniently find the best offer.

For those who are still undecided, each category has useful filters and comparison tools. An efficient text search function enables category and specific product search by name. Each product page provides comprehensive information to aid your decision-making: description, technical specifications, photos and videos, useful links and reviews. You can also find block "Where to buy?" with online stores list, prices and direct links to purchase page.

E-Catalog system includes more than 3,000 stores, showcasing 1.5 million products, with data being continually updated. This ensures you can select and purchase a suitable product under the most favourable conditions! Presently, we operate in various countries: Ukraine, Poland, the USA, the UK, and Kazakhstan, and we're persistently seeking to extend our reach.

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