This document discusses modular cold containers for cold storage. It describes how the containers would be made of recycled plastic waste converted to carbon fiber, powered by solar panels and piezoelectric pads. The containers would be portable, low-cost storage modules that can be assembled as needed. Manufacturing would involve converting plastic waste to carbon fiber for construction and using solar and piezoelectric technologies for power. The design aims to provide an efficient, renewable cold storage solution for transporting perishable goods in India.