Sliding UPVC windows are a popular choice for homeowners in Portugal due to their durability, energy efficiency, and low maintenance requirements. There are several reputable brands in Portugal that produce high-quality sliding UPVC windows, including Technal, Cortizo, and Extrusal.

Technal is a well-known brand that is recognized for its innovative designs and high-performance windows. They offer a wide range of sliding UPVC windows that are not only stylish but also provide excellent thermal insulation and soundproofing properties.

Cortizo is another popular brand in Portugal that is known for its durable and weather-resistant sliding UPVC windows. Their windows are designed to withstand the harsh weather conditions in Portugal and offer superior energy efficiency to help homeowners save on their heating and cooling costs.

Extrusal is a local brand that specializes in the production of high-quality sliding UPVC windows. They have a strong reputation for their attention to detail and craftsmanship, making them a trusted choice for many homeowners in Portugal.

When it comes to production cities, Porto and Lisbon are two of the most popular cities in Portugal for the manufacturing of sliding UPVC windows. These cities are home to several factories and production facilities that produce a wide range of UPVC windows for both residential and commercial applications.

Overall, sliding UPVC windows from Portugal are a great choice for homeowners looking for a durable, energy-efficient, and stylish window option. With several reputable brands and production cities to choose from, homeowners in Portugal can find the perfect sliding UPVC windows to complement their home's design and enhance its energy efficiency.…