A polytunnel is a tunnel typically made from steel and covered in polyethylene, usually semi-circular, square or elongated in shape. The interior heats up because incoming solar radiation from the sun warms plants, soil, and other things inside the building faster than heat can escape the structure

Redderi Jaya simha

By Redderi Jaya simha


Leave a Reply

Your email address will not be published. Required fields are marked *