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2. VEKA - Wikipedia

   en.wikipedia.org/wiki/VEKA

   VEKA AG is a German extruder of uPVC profiles for use in windows, doors, roller shutters and sliding doors headquartered in Sendenhorst, Germany. [1] Founded in 1967 as a manufacturer of shutters, it currently operates its own extrusion facilities in twelve countries. [1][2][3] It also operates representative offices in more than forty ...

3. Oknoplast - Wikipedia

   en.wikipedia.org/wiki/Oknoplast

   oknoplast.com. Oknoplast is a Polish multinational company established in 1994 in Kraków that manufactures PVC windows, window components, doors, aluminium products and roller shutters. Currently based in Ochmanów with their enterprise zone near Kraków. Facilities of Oknoplast consist of 32 000 m 2 manufacturing area, offices, warehousing ...

4. Door - Wikipedia

   en.wikipedia.org/wiki/Door

   A door is a hinged or otherwise movable barrier that allows ingress (entry) into and egress (exit) from an enclosure. The created opening in the wall is a doorway or portal. A door's essential and primary purpose is to provide security by controlling access to the doorway (portal). Conventionally, it is a panel that fits into the doorway of a ...

5. Insulated glazing - Wikipedia

   en.wikipedia.org/wiki/Insulated_glazing

   EURO 68 wooden window profile with insulated glazing. Insulating glass (IG) consists of two or more glass window panes separated by a space to reduce heat transfer across a part of the building envelope. A window with insulating glass is commonly known as double glazing or a double-paned window, triple glazing or a triple-paned window, or ...

6. Polyvinyl chloride - Wikipedia

   en.wikipedia.org/wiki/Polyvinyl_chloride

   Polyvinyl chloride (alternatively: poly (vinyl chloride), [ 6 ][ 7 ] colloquial: vinyl[ 8 ] or polyvinyl; abbreviated: PVC[ 8 ]) is the world's third-most widely produced synthetic polymer of plastic (after polyethylene and polypropylene). About 40 million tons of PVC are produced each year. [ 9 ]

7. When to worry about premature ventricular contractions (PVCs)

   www.healthline.com/.../when-to-worry-about-pvc

   But sometimes you may need to see a doctor. A premature ventricular contraction (PVC) is a heartbeat that starts in a different part of the heart than usual. A PVC (or lots of PVCs) can make you ...