polycarbonate greenhouse company, builders | Weifang Sainpoly Greenhouse Technology Co.,Ltd

description1

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Product Advantages

Superior Insulation and Energy Efficiency: Its hollow structure forms an excellent air insulation layer, with an insulation performance (U-value) more than twice that of glass of the same thickness, significantly reducing winter heating energy consumption and improving production efficiency.

High Light Transmittance and Optimized Light: High-quality sheets achieve a light transmittance of over 80%, and a special coating can be added to efficiently convert direct sunlight into softer, diffused light more beneficial to crop growth, reducing scorching and promoting uniform photosynthesis.

Superior Impact Resistance and Safety: Impact resistance is more than 200 times that of ordinary glass, capable of withstanding extreme weather such as hail and snowstorms. The material is tough and not easily broken, ensuring extremely high safety.

Lightweight, Durable, and Structurally Economical: Weighing only 1/12 of glass, it greatly reduces the load requirements on the main structure, lowering steel frame costs and foundation expenses. A UV-resistant coating ensures stable light transmittance over long-term use, with a lifespan of over 10 years.

Product Parameters

Glass Specifications

Single Span:	Commonly 8m, 9.6m, 12m.
Gutter Height (Side Height):	Typical range 4m - 6m.
Ridge Height (Total Height):	Typical range 4.5m - 7.5m+.
Coverage Area:	Infinitely expandable through multi-span structures, commonly with a single building area of several thousand square meters.
Covering Material:	4-5mm flat glass or insulated glass.

Polycarbonate Hollow Sheet Specifications

Single Span:	Common spans are 8 meters, 9.6 meters, and 12 meters. Larger spans require higher structural strength.
Eaves Height (Side Height):	Typical range is 4 to 5 meters. Affects interior space and insulation performance.
Ridge Height (Top Height):	Typical range is 5 to 6.5 meters. Depends on span and roof slope.
Drainage Slope:	A slope of at least 20% (approximately 11.3°) is recommended to ensure proper rainwater drainage.
Climate:	In cold regions, for energy conservation, thicker (e.g., 8-10 mm) or triple-layered plywood is recommended.
Crops:	For light-loving crops, ensure high light transmittance (>80%).
Budget:	Increasing thickness and number of layers significantly increases costs.

Covering material

Its multi-layered hollow structure contains a layer of still air, providing more than twice the thermal insulation (U-value) of single-pane glass, resulting in significant energy savings. Simultaneously, it is lightweight (approximately 1/12 the weight of glass), extremely impact-resistant (more than 200 times stronger than glass), and converts direct sunlight into more uniform diffused light, beneficial for crop growth.

When selecting a glass system, thickness (commonly 4mm, 6mm, 8mm, 10mm) and number of layers (double or triple) are crucial, directly determining insulation performance and cost. A surface UV-resistant coating is essential to ensure a weather-resistant lifespan of over 10 years.

In summary, it is a high-performance option balancing insulation, safety, lifespan, and cost, particularly suitable for greenhouse projects with stringent energy consumption and disaster resistance requirements.

system

Cooling system Exhaust fan has the galvanized housing, a large aluminum wheel, a 0.8mm frame, and a 0.4mm thick blind. The cooling pad is made of polymer wet curtain paper, which is a special product that has been specially treated to have high structural strength, corrosion resistance, and excellent air permeability and water resistance. The air enters the greenhouse through the cooling pad, which has the effect of cooling, moistening and dust removal.
Heating system Greenhouse heating system refers to a set of suitable heating facilities selected to meet heating needs, including heat source, heat dissipation facilities, and heat transfer facilities. The main accessories include boilers, transmission pipelines, circulating water, radiators, and various control or regulating valves.
Shading system Internal shading is installed inside the greenhouse, fixed to the structure and matched with the frame; its net is made of white aluminum foil and secured by white support wires, achieving 65% shading rate via light reflection. External shading is fixed outside the greenhouse frame and supported by columns and beams; its net is made from HDPE, PE, PB, PVC, recycled/new materials, etc., treated with UV stabilizers and anti-oxidants for high tensile strength, aging/corrosion/radiation resistance and light weight, secured by black support wires, and delivers a better 75% shading rate through light absorption.
Irrigation system Its working principle is to draw irrigation water from the source, pressurize, purify and filter it, then deliver it to field irrigation facilities via pipelines. Drip arrows suit soilless cultivation (3–4 per meter, 1.6m planting spacing), including main pipelines (φ50–φ63), connectors, φ16/1.2mm PE pipes and drip arrow four-piece sets, excluding fertilizer applicators. Drip irrigation applies to ground planting (drip tape spacing 0.8m, φ20/16 PE pipes), with components including water pumps, proportional fertilizer applicators, main pipelines (φ32–φ63), PE pipes and connectors.
Fertilization system Fertilization system: You can choose the corresponding type according to actual needs, manual type, electric type, smart type, and can be connected to mobile phones and computers for remote control. More details will be shown in the proposal.
Control system Designed for agricultural greenhouses, environmental control and weather observation, this automatic system monitors key agricultural factors including wind speed/direction, air/soil temperature and humidity, air pressure, rainfall, solar radiation and UV intensity. Users can choose between ordinary power distribution cabinets and intelligent temperature control systems. The latter uses outdoor weather stations and indoor sensors to detect and record temperature, humidity, light, CO₂ concentration, substrate temperature and humidity, and supports remote control via computer and mobile phone.

Applications and cultivation

Conventional Vegetable Cultivation: Leafy Vegetables: Lettuce, spinach, rapeseed, bok choy, etc. Short growth cycles and low temperature and light requirements make them ideal for off-season or early spring/late autumn cultivation in film greenhouses. Fruit Vegetables: Tomatoes, cucumbers, eggplants, peppers, zucchini, etc. Spring planting can be done earlier, and autumn planting can be delayed, effectively avoiding the low temperatures of open fields and significantly extending the harvest period. Fruit and Specialty Crops: Strawberries: Film greenhouses are the main form of off-season strawberry cultivation.

Through mulching and greenhouse insulation, fresh fruit can be supplied from winter to spring. Melons, Watermelons: Suitable for early-maturing cultivation. Seedling Raising: Cultivating seedlings for open-field vegetables, flowers, and fruit trees is cost-effective. Some Flowers and Shade-Tolerant Crops: Mid- to low-grade potted flowers, herbaceous flowers, or shade-tolerant foliage plants can be planted. In brief: Film greenhouses are "economical and practical," mainly used to resist low temperatures and extend the growing season. They are suitable for crops that do not have high requirements for environmental precision, have short growth cycles, and moderate economic benefits. They are currently the most widely used type of greenhouse in China.

About Us

Weifang Sainpoly Greenhouse Equipment Co., Ltd. is located in Weifang City, Shandong Province, covering an area of 32,000 square meters. With deep expertise in the agricultural greenhouse sector, the company is one of China's leading greenhouse manufacturing enterprises.

We focus on the production, sales, and technical services of greenhouse materials, offering advanced greenhouse design solutions. We are also a professional supplier of various greenhouse types, including arch greenhouses, film greenhouses, polycarbonate sheet greenhouses, glass greenhouses, hydroponic greenhouses, and shade greenhouses.

With 16 years of production experience and 11 years of export expertise, our annual production capacity reaches 100 hectares. Currently, our business covers most provinces in China and over 80 countries and regions worldwide, including the UK, France, Germany, the USA, Canada, Congo, South Africa, Uzbekistan, the UAE, and Singapore.