EVA and PO greenhouse films are both widely used in commercial greenhouse applications, but they are not exactly the same type of material category.
EVA stands for Ethylene-Vinyl Acetate, a copolymer commonly used in greenhouse film formulations to improve flexibility, low-temperature behavior, optical characteristics and thermal performance.
PO stands for Polyolefin, a broader family of polymers. In the greenhouse film market, “PO greenhouse film” is commonly used to describe a multi-layer, high-performance agricultural film that may combine several resins and functional additives.
This means an important point:
EVA and PO are not always direct alternatives. A PO greenhouse film can contain EVA.
For buyers, the more useful comparison is not simply “EVA vs PO,” but:
film structure + optical performance + UV stabilization + IR + anti-fog + diffusion + mechanical properties + expected service life.
Quick Comparison: EVA vs PO Greenhouse Film
| Feature | EVA Greenhouse Film | PO Greenhouse Film |
|---|
| Material concept | EVA-containing formulation | Polyolefin-based, often multi-layer |
| Flexibility | Usually high | Depends on formulation |
| Low-temperature performance | Often good | Can be optimized |
| Thermal performance | Can be improved | Can combine EVA + IR |
| Light transmission | Can be very good | Commonly optimized |
| Light diffusion | Can be added | Commonly customized |
| Anti-fog | Can be added | Commonly integrated |
| IR function | Can be added | Commonly integrated |
| UV stabilization | Required | Required |
| Multi-layer design | Available | Very common |
| Customization | Good | Very high |
| Commercial greenhouse use | Yes | Yes |
| Typical application | Cold/thermal-sensitive projects | Multi-functional commercial greenhouses |
The correct choice depends on the project rather than the product name.
What Is EVA Greenhouse Film?
EVA greenhouse film contains ethylene-vinyl acetate copolymer as part of its material formulation.
EVA can help modify several film properties, including:
It is often considered for greenhouse projects where the film needs to remain flexible and perform well under colder conditions or significant day/night temperature changes.
EVA greenhouse film can also be combined with:
UV stabilization
IR
Anti-fog
Anti-drip
Light diffusion
So EVA film should not be understood as a single-function product.
What Is PO Greenhouse Film?
PO stands for polyolefin.
In agricultural film markets, PO greenhouse film usually refers to a high-performance, multi-functional greenhouse covering produced using polyolefin materials and multi-layer co-extrusion technology.
A PO greenhouse film can be designed with functions such as:
Because PO is a broader material concept, the actual performance depends heavily on the formulation and layer structure.
Is EVA a Type of PO?
This is where many buyers get confused.
Chemically, EVA is an ethylene-based copolymer and is closely related to the polyolefin material family in practical film applications.
In commercial greenhouse film terminology, however, “EVA film” and “PO film” are often marketed as different product categories.
Therefore, the terms are useful for sales and product classification, but they should not be treated as perfectly separate scientific categories.
A PO greenhouse film can contain EVA as one component.
For example:
PO + EVA + IR + AF + UV + Diffusion
can all exist in the same multi-layer greenhouse film.
1. Difference in Flexibility
EVA is well known for improving flexibility.
This can be useful during:
Installation
Folding
Transportation
Wind movement
Cold-weather use
Compared with a basic PE formulation, EVA-containing film may remain softer and more flexible at lower temperatures.
PO greenhouse film can also be flexible, but the final result depends on its resin combination and layer design.
2. Difference in Low-Temperature Performance
For greenhouses operating in colder climates, low-temperature behavior matters.
Some plastic films can become stiffer when temperatures fall.
EVA can help improve flexibility under colder conditions.
This is why EVA-containing greenhouse film may be considered for:
PO film can also be designed for these conditions, especially if EVA is incorporated into the structure.
3. Difference in Thermal Performance
EVA can contribute to the thermal performance of greenhouse film.
At night, greenhouses lose heat partly through long-wave infrared radiation.
An appropriately designed EVA-containing film may help reduce part of this heat loss.
However, EVA should not be confused with a dedicated IR system.
For projects where thermal retention is especially important, the film may combine:
EVA + IR
rather than relying on EVA alone.
PO greenhouse film often offers more flexibility in combining several thermal and optical functions in one multi-layer structure.
4. Difference in Light Transmission
Both EVA and PO greenhouse films can provide good light transmission.
However, optical performance depends on:
Film thickness
Resin quality
EVA content
Diffusion additives
Layer structure
Surface condition
Aging
Dust accumulation
A buyer should therefore request actual light-transmission data rather than assuming one material category is always better.
5. Difference in Light Diffusion
Light diffusion helps spread incoming sunlight more evenly through the greenhouse.
This can improve light distribution across:
Upper leaves
Middle canopy
Lower canopy
Shaded areas
Both EVA and PO greenhouse films can be produced with diffusion.
However, high-diffusion PO greenhouse film is commonly selected for commercial projects requiring precise light management.
For example:
Tomato
Cucumber
Pepper
Flower greenhouses
in high-solar-radiation regions may benefit from a carefully designed diffusion system.
6. Difference in Anti-Fog Performance
EVA itself does not automatically provide anti-fog performance.
Anti-fog requires a dedicated AF system or functional inner layer.
A film may therefore be designed as:
EVA + AF
or:
PO + EVA + AF
depending on the required structure.
PO greenhouse film is often associated with multi-layer designs where the inner layer is optimized for anti-fog or anti-drip performance.
7. Difference in UV Resistance
Neither EVA nor PO should be assumed to be UV-resistant without proper stabilization.
Greenhouse films are exposed to strong ultraviolet radiation for long periods.
Without adequate UV stabilization, the film may:
Become brittle
Crack
Lose strength
Lose optical properties
Fail prematurely
Both EVA and PO greenhouse films therefore need a suitable UV stabilization system.
The expected service life can vary according to:
Local UV intensity
Altitude
Temperature
Film formulation
Agricultural chemicals
Installation quality
8. Difference in Mechanical Performance
EVA can contribute to flexibility and toughness.
PO greenhouse film, especially when produced using multi-layer co-extrusion, can be designed for a more balanced combination of:
Tensile strength
Tear resistance
Puncture resistance
Flexibility
Optical performance
Mechanical performance depends on the whole film structure, not only on whether the film is called EVA or PO.
EVA vs PO Greenhouse Film for Hot Climates
In hot, high-radiation regions, the main priorities are often:
In these conditions, a multi-functional PO greenhouse film may be attractive because it can combine several optical and durability functions.
EVA can still be part of the formulation, but it may not be the main purchasing priority.
For example, in a hot desert climate, UV + diffusion may be more important than simply increasing EVA content.
EVA vs PO Greenhouse Film for Cold Climates
In colder climates, EVA may become more relevant.
Important priorities can include:
A PO film containing EVA and IR can therefore be a strong option.
For example:
PO + EVA + IR + AF + UV
may be suitable for a greenhouse exposed to cold nights and large day/night temperature differences.
EVA vs PO for High-Humidity Greenhouses
In humid climates, condensation management is important.
The buyer should focus on:
AF
Anti-drip
Film surface behavior
Ventilation
Temperature difference
Neither EVA nor PO alone solves condensation.
A dedicated anti-fog system is required.
PO greenhouse film may be easier to customize for these multi-functional requirements because different functions can be assigned to different layers.
EVA vs PO for Different Crops
Tomato
Tomato greenhouses often benefit from:
Good light transmission
Suitable diffusion
Anti-fog
IR in colder regions
Either EVA-containing film or multi-functional PO film can be suitable.
Cucumber
Cucumber plants can produce dense foliage.
Diffusion and condensation control may be important.
A PO film with EVA, AF and diffusion can be considered depending on climate.
Pepper
In strong sunlight, UV resistance and diffusion may be more important than EVA alone.
Strawberry
Strawberry production can be sensitive to:
Light
Humidity
Temperature
Condensation
A customized film specification is usually more important than the product name.
Flowers
Flower greenhouses often require more precise optical and climate control.
Multi-functional PO film may be particularly suitable where several requirements need to be integrated.
EVA vs PO: Which Is Better?
There is no universal answer.
EVA Film May Be More Relevant When:
Low-temperature flexibility is important
Thermal properties are a priority
The project specifically requires EVA-containing material
Cold-night performance matters
PO Film May Be More Relevant When:
Multiple functions are required
The greenhouse is commercial
Light management is important
High diffusion is needed
AF, IR, EVA and UV need to be combined
The film specification needs more customization
The Most Important Point
A PO greenhouse film can contain EVA.
So in many commercial projects, the real choice is not:
EVA or PO
but rather:
How much EVA, where it is used, and what other functions are included in the PO film structure?
EVA vs PO Greenhouse Film Price
Price depends on:
Film thickness
Resin cost
EVA content
Number of layers
UV system
IR additives
AF system
Diffusion additives
Order quantity
Customization
A PO film with multiple functional additives may cost more than a simpler EVA or PE film.
However, professional buyers should compare:
total project value, not only price per kilogram.
A more expensive film may be justified if it provides:
Better thermal performance
Better crop light distribution
Longer service life
Lower replacement frequency
Better greenhouse climate control
How to Compare EVA and PO Greenhouse Film Quotations
Ask suppliers to provide the same technical information.
| Specification | What to Compare |
|---|
| Film type | EVA / PO |
| Thickness | 150 / 180 / 200 micron |
| Width | meters |
| Length | meters |
| Layer structure | 3 / 5 / 7 layer |
| EVA content | if relevant |
| UV life | expected years |
| Light transmission | % |
| Diffusion | % |
| IR | Yes / No |
| AF | Yes / No |
| Anti-drip | Yes / No |
| Mechanical data | if available |
| MOQ | tons |
| Packaging | standard / OEM |
This gives buyers a much more meaningful comparison than simply asking which film is “better.”
Common Buying Mistakes
Mistake 1: Assuming EVA and PO Are Completely Separate Materials
A PO film may contain EVA.
Mistake 2: Assuming More EVA Is Always Better
The correct EVA content depends on the required performance.
Mistake 3: Assuming PO Automatically Means Better Quality
Quality depends on formulation and production.
Mistake 4: Ignoring UV Stabilization
Neither EVA nor PO replaces a proper UV system.
Mistake 5: Choosing Film Only by Name
The full technical specification is more important.
Example 1: Cold-Climate Tomato Greenhouse
Suppose a buyer has:
Climate: Cold nights
Crop: Tomato
Thickness: 200 micron
Required lifetime: 3 years
Main concern: Heat retention and condensation
A possible specification might include:
PO + EVA + IR + AF + UV
The exact formulation would depend on local conditions.
Example 2: Hot-Climate Commercial Greenhouse
Suppose a buyer has:
Climate: Hot and strong sunlight
Crop: Pepper
Thickness: 200 micron
Main concern: UV and strong direct sunlight
A possible specification might prioritize:
PO + High Diffusion + UV + AF
with EVA included only if needed.
This illustrates why climate matters more than choosing one material name.
How to Choose Between EVA and PO Greenhouse Film
Use this process:
Step 1 — Identify Climate
Hot, cold, humid, dry, high-UV or high-wind.
Step 2 — Identify Crop
Different crops need different light and thermal conditions.
Step 3 — Define the Required Lifetime
Short-term or multi-year.
Step 4 — Choose Thickness
For example:
120 / 150 / 180 / 200 micron
Step 5 — Select Required Functions
Choose among:
EVA / UV / IR / AF / Anti-Drip / Diffusion
Step 6 — Compare Complete Specifications
Do not compare only the labels “EVA” and “PO.”
Frequently Asked Questions
What is the main difference between EVA and PO greenhouse film?
EVA is a specific copolymer used to modify greenhouse film properties, while PO is a broader polyolefin material category commonly used to describe multi-functional greenhouse films.
Is EVA greenhouse film better than PO film?
Not necessarily.
EVA may be useful for flexibility and thermal performance, while PO film can integrate multiple functions in one structure.
Can PO greenhouse film contain EVA?
Yes.
A PO greenhouse film can include EVA as part of its formulation.
Is EVA good for cold climates?
It can be very useful because of its flexibility and thermal characteristics.
Is PO better for hot climates?
PO film can be a strong option for hot climates when combined with UV stabilization and light diffusion.
Does EVA provide anti-fog performance?
No.
Anti-fog requires a dedicated AF system.
Does PO automatically last longer than EVA?
No.
Lifetime depends on UV stabilization, formulation, thickness, climate and installation.
Which is more expensive, EVA or PO film?
It depends on the formulation.
A highly functional PO film can cost more because it may combine multiple additives and layers.
EVA and PO Greenhouse Film Manufacturer in China
GH Agricultural Film manufactures customized greenhouse films for commercial agricultural applications.
Our product range includes:
Using 7-layer co-extrusion technology, different materials and additives can be integrated into different layers according to project requirements.
Customization options include:
Thickness
Width
Length
EVA formulation
UV service life
IR
AF
Anti-drip
Light diffusion
Packaging
Maximum film width can be customized up to 20 meters.
Get an EVA or PO Greenhouse Film Recommendation
Not sure whether your project needs EVA film, PO film, or a PO film containing EVA?
Send us:
Country / Region
Crop
Greenhouse Type
Film Thickness
Required Width & Length
Expected Service Life
Local Climate Conditions
We can help recommend a suitable combination of:
PO + EVA + UV + IR + AF + Light Diffusion
for your greenhouse project.