# Ndasi > Ndasi manufactures calibrated hollow cement blocks, interlocking concrete pavers, and stabilised earth blocks (SEB/CSEB) in Yaoundé, Cameroon, for residential, institutional and NGO construction. Important facts: - Factory / HQ: Ndasi Factory Complex, Mvan / Entrée Complexe Beac, Yaoundé, Cameroon - Languages: English and French site versions - Contact: info@ndasi.com · WhatsApp +49 177 7593009 - Facebook: https://www.facebook.com/ndasi.inc/ - Instagram: https://www.instagram.com/ndasi_com/ - Hours: Mon–Fri 08:00–18:00, Sat 09:00–14:00, Sunday closed (emergency only) - Do not invent prices or MPa certificates; quotes require project details ## Core pages (HTML) - [Home EN](https://ndasi.com/index.html): Flagship overview of Ndasi products and Yaoundé plant - [Home FR](https://ndasi.com/index-fr.html): Accueil français - [Products EN](https://ndasi.com/products.html): Hollow blocks, pavers, SEB catalog with photos - [Products FR](https://ndasi.com/products-fr.html): Catalogue produits - [CSEB / SEB](https://ndasi.com/cseb-blocks.html): Stabilised earth blocks technical page - [Production EN](https://ndasi.com/production.html): Plant equipment and process - [Production FR](https://ndasi.com/production-fr.html): Processus de production - [About EN](https://ndasi.com/about.html): Company context - [About FR](https://ndasi.com/about-fr.html): À propos - [Contact EN](https://ndasi.com/contact.html): Address, email, WhatsApp - [Contact FR](https://ndasi.com/contact-fr.html): Contact - [Blog EN](https://ndasi.com/blog.php): Construction insights from Cameroon - [Blog FR](https://ndasi.com/blog-fr.php): Blog français ## LLM-friendly markdown - [Products EN (md)](https://ndasi.com/products.md): Product facts without chrome - [Products FR (md)](https://ndasi.com/products-fr.md) - [About EN (md)](https://ndasi.com/about.md) - [About FR (md)](https://ndasi.com/about-fr.md) - [CSEB / SEB (md)](https://ndasi.com/cseb-blocks.md) ## Optional - [Sitemap](https://ndasi.com/sitemap.php) - [Author](https://salomonowona.com): Salomon F. Owona