Simplex Engineering Company

Simplex Engineering Company (SEC), established in 1967, is a global pioneer in manufacturing fasteners for various critical and supercritical applications. We serve industries including electrical towers, telecom towers, steel buildings, solar energy, wind energy, and engineering. SEC is a family-run business, currently led by Mr. Sunil Kumar Gupta.

Renowned for producing high-tensile, mild steel, and stainless-steel fasteners, we operate two state-of-the-art plants in Kolkata, India. As a leading brand, our mission is to revolutionize the fastener industry through innovation, expertise, and uncompromising quality, delivering tailored solutions to earn and maintain our clients' trust.