Ordinary PO (Polyolefin) film is a widely used greenhouse covering material composed primarily of polyethylene with added modifiers. This transparent plastic film offers balanced performance in durability, light transmission (typically 85%-92%), and cost-effectiveness.

In greenhouse applications, PO film serves multiple functions:

‌Light diffusion‌ - Softens sunlight to prevent plant burns while ensuring even light distribution

‌Thermal insulation‌ - Reduces nighttime heat loss with moderate thermal retention properties

‌Weather resistance‌ - Withstands UV exposure (usually 1-3 years lifespan) and moderate wind loads

‌Droplet control‌ - Anti-fog additives prevent condensation dripping that could damage plants

Compared to specialized agricultural films, ordinary PO film provides basic protection at lower cost, making it suitable for seasonal crops or budget-conscious growers. Its flexibility allows easy installation on various greenhouse structures. While lacking advanced features like IR-blocking or extended durability, it remains a practical choice for standard horticultural needs in temperate climates.