Precision Climate Control Commercial Semi-Closed Greenhouse Supplier & Manufacturer for High-End Flowers - SAINPOLY (Sainpoly)
SAINPOLY semi-closed greenhouses are tailor-made for precision climate-controlled cultivation of high-end flowers.
With temperature control accuracy of ±0.5℃, time-phased and zoned humidity management, and precise CO₂ enrichment, the greenhouse realizes accurate scheduling of flowering induction for Phalaenopsis and listing time control for cut roses.
We provide direct supply from the manufacturer and full-cycle services ranging from light environment simulation to flowering period regulation.
With temperature control accuracy of ±0.5℃, time-phased and zoned humidity management, and precise CO₂ enrichment, the greenhouse realizes accurate scheduling of flowering induction for Phalaenopsis and listing time control for cut roses.
We provide direct supply from the manufacturer and full-cycle services ranging from light environment simulation to flowering period regulation.
5.0
Model:
Sainpoly-Semi-closed
Minimum order quantity:
3000 square meters
Brand:
SAINPOLY
Price terms:
EXW, FOB, CIF
Origin:
Weifang, Shandong
Delivery method:
Air/Sea/Land (upon request)
Payment methods:
Telegraphic transfer (T/T), letter of credit (L/C)
Delivery date:
30-60 days (depending on project size)
Production capacity:
Annual output of over 200 hectares
Packaging:
Unified classification and packaging according to international standards
design customization
Please fill out the form below to request a quote or to request more information about us. Please be sure to upload customized requirement documents or pictures, and we will get back to you as soon as possible with a response. we're ready to start working on your new project, contact us now to get started.
Please fill out the form below to request a quote or to request more information about us. please be as detailed as possible in your message, and we will get back to you as soon as possible with a response. we're ready to start working on your new project, contact us now to get started.
Product Description
Semi-Closed Greenhouse Dedicated to Precision Climate Control for High-End Flowers
SAINPOLY semi-closed greenhouses are engineered for commercial cultivation of premium flowers. The semi-closed structure delivers ultra-stable microclimate: temperature fluctuation controlled within ±0.5℃, time-segmented & zoned precise humidity regulation, and CO₂ concentration accurately maintained at 800–1200ppm. The adjustable opening-closing structure adopts natural ventilation on sunny days to cut energy consumption, and closes up for heat preservation during rainy, cloudy or extreme weather. Combined with diffuse tempered glass and double-layer sunshade & thermal insulation system, light inside is even and soft, leading to industry-leading uniformity of flower color and yield rate of Grade-A flowers.
It fits flower varieties demanding stringent climate control including Phalaenopsis, rose, lily and Anthurium andraeanum. SAINPOLY provides full-process services covering lighting demand analysis for varieties, optical environment simulation design and flowering period regulation guidance.
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Product Advantages
1
The main frame is made of Q235B and higher-grade standard steel with hot-dip galvanizing treatment, with galvanized coating thickness ≥180g/m², far exceeding the standard for ordinary steel. A single upright column can bear several tons of load. The overall service life exceeds 15 years, with top-tier anti-snow load and wind uplift resistance in the industry.
2
Supported by semi-closed enclosure, double-layer heat preservation, zoned heating and intelligent climate control, temperature fluctuation is limited within ±0.5℃, enabling precise scheduling of flower forcing for Phalaenopsis and market launch time for cut roses.
3
91% high-transmittance diffuse tempered glass eliminates direct light spots and plant shadows. It ensures even flower color for high-end flowers such as Phalaenopsis, achieving outstanding yield of Grade-A flowers across the industry.
4
The semi-closed structure boosts CO₂ enrichment efficiency by 30%–50% compared with open greenhouses, greatly improving photosynthetic efficiency of flowers for thicker, brighter and more vivid petals.
5
90% of core components are self-produced. We hold CE certification and 15 technical patents. A three-stage inspection system guarantees zero defects before delivery.
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Technical Specifications
| Parameter | Standard Configuration | Optional upgrade |
| Span | 8m,9.6m,12m | Support for customization of various lengths |
| Bay | 4m,8m | Support for customization of various lengths |
| Eave height | 6m | Support for customization of various heights |
| Top Covering | 4mm, 5mm Single layer ordinary tempered glass | 4mm, 5mm Single layer diffuse scattering tempered glass |
| Side Covering | 4mm, 5mm Single layer tempered glass | 5+6+5mm Hollow tempered glass |
| Frame Galvanizing Layer | ≥275g/m2 | Hot-dip galvanized followed by spray coating process |
| Snow Load Resistance | 0.35KN/m2 | 0.3~0.8KN/m2 |
| Wind Load Resistance | 0.38KN/m2 | 0.3~0.8KN/m2 |
| External Shading Screen | Electric black round wire mesh | Customizable with different shading rates |
| Internal Shading Screen | Electric aluminum foil reflective mesh | Customizable with different shading rates |
| Insulation Curtain | Oxford cloth+cotton+Oxford cloth | Upgradeable waterproof surface/Upgradeable foldiable thermal insulation quilt |
| Heating System | Ordinary boiler heating | Finned tubes,warm air blowers, snow melting pipes/Electric warm air blowers, fuel-fired warm air blowers |
| Cooling method | Chiller Unit | Independent space chiller unit / Planting pipe air supply system |
| Roof Ventilation Method | Electric single-sided ridge rppf window | Electric roof window can be upgraded to double-side per ridge, single-side per ridge, and all-side per ridge |
| Side Ventilation Method | Electric gear side window | Electric lifting side window |
| Control System | Manual electrical control cabinet | IoT intelligent automatic electrical control cabinet Optional mobile online control |
Application and Solutions
Extremely cold in winter，conventional greenhouse vegetable crops will experience irreversible freezing damage.
delayed listing
petal diseases
Uneven illumination
Pests & diseases
Long life design
Insufficient flowering period control
delayed listing
Adopt ±0.5℃ precise temperature control, CO₂ enrichment and photoperiod regulation to accurately control flower forcing of Phalaenopsis and the delivery time of cut roses, so as to meet market demand for festivals.
Custom Commercial
Greenhouse Services
As the source production factory, we provide flexible fully customized services:
1
The eave height, opening, length, and span can be adjusted as needed, and special customization can be made according to planting needs and geographical features
2
Depending on your needs, you can choose from CO2 disinfection system, hanging system, irrigation system, photovoltaic system, heating system, cooling system, fertilization system, hydroponic system, fish and vegetable symbiosis system, ventilation system, shading system
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SAINPOLY Full-Service Support
Our design team will provide CAD construction drawings and load calculation reports based on your local climate, crop type, and budget. Span, eave height, covering material, insulation scheme, and environmental control system can all be customized according to your needs, fully matching your project requirements.
As the source factory, our self production rate reaches 90%. Robot welding, laser cutting, and automatic stamping ensure machining accuracy. Each batch of products strictly follows the three inspection system and has passed multiple verifications such as CE certification and ISO
Engineers go to the site to guide the local team, providing manuals, video tutorials, and daily quality checks.
A professional team is fully responsible for the foundation construction, final debugging, and delivery of a ready to use greenhouse.
Remote troubleshooting and equipment debugging can be resolved remotely through video calls and data analysis. We will gradually guide your local personnel in the operation.
Provide free online training every year to help your team master the latest maintenance techniques and new technologies.
FAQ
1
Q: What are the core advantages of semi-closed greenhouses for flower cultivation?
A: Equipped with ±0.5℃ precise temperature control, accurate CO₂ enrichment and positive-pressure pest prevention, it creates an ultra-stable microclimate for high-end flowers, realizing accurate flowering period control and remarkable improvement in the yield of Grade-A flowers.
2
Q: Can the semi-closed greenhouse achieve precise temperature control for Phalaenopsis flower forcing?
A: Yes. With ±0.5℃ temperature control accuracy combined with photoperiod control, the flower forcing cycle and listing date of Phalaenopsis can be scheduled precisely to meet festival market demands.
3
Q: How does the semi-closed greenhouse prevent diseases during flower planting?
A: Positive-pressure insect prevention plus 50-mesh insect screen blocks external pathogen invasion. Time-divided & zoned humidity control suppresses gray mold, and the semi-closed structure lowers reliance on pesticides.
4
Q: Do you provide technical guidance on flowering period regulation for semi-closed greenhouses?
A: Yes. Our engineers offer full-cycle guidance covering climate control logic programming, temperature & humidity calendar setting and photoperiod management.
5
Q: What is the minimum order area?
A: There is no rigid minimum area requirement. An area of over 3,000㎡ is recommended to amortize design and transportation costs. Customized solutions for pilot projects are negotiable.
6
Q: Does the semi-closed greenhouse comply with international flower export standards?
A: Yes. It has obtained CE certification, and all raw materials meet EU standards. We can provide assistance to meet the certification requirements of GlobalGAP and MPS.
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Address:
East Section of Paris Road, Qingzhou Economic Development Zone, Weifang City, Shandong Province
Li Jianyong
+86 15006367526
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