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

description1

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Product Advantages

High Yield and Efficiency: Through multi-season or year-round production, the annual yield per unit area can reach 3-5 times that of open-field cultivation (e.g., advanced greenhouses can produce 60-80 kg per square meter annually).

Superior Quality: Precise water and fertilizer control enhances the sugar content, flavor, and uniformity of tomatoes, resulting in clean, pesticide-free, and branded high-value marketable fruit.

Controllable Risks: Effectively mitigates the impact of extreme weather (heavy rain, hail, extreme heat) and soil-borne diseases (wilt, nematodes, etc.), allowing for highly planned production.

Resource Conservation: Using drip irrigation or integrated water and fertilizer technology can save over 50% of water and increase fertilizer utilization by over 30%.

Product Parameters

Environmental Parameters

Temperature:	Daytime: 22-26°C, Nighttime: 15-18°C. Temperature difference is crucial for stem strength and flower color formation.
Air Humidity:	60%-70%. Humidity above 80% significantly increases the risk of downy mildew and gray mold, requiring enhanced ventilation or dehumidification.
Light:	Prefers strong light and has a high light saturation point. Daily cumulative light integral (DLI) needs to be ≥15 mol/m²/day; large-scale supplemental lighting is often required in winter.
CO₂ Concentration:	Sunny days: 800-1200 ppm, which can significantly promote growth and bud development.

Water and Fertilizer Parameters

Irrigation EC value:	1.5-2.5 mS/cm, adjusted according to the growth stage (vegetative growth vs. reproductive growth).
Irrigation pH value:	5.5-6.2 (slightly acidic).
Key Nutrients:	High potassium and calcium requirements. Potassium directly affects flower color vibrancy and stem strength; calcium prevents new leaf malformation and gray mold.

Cultivation Management Parameters

Planting Density:	7-10 plants per square meter (depending on variety and pruning method).
Substrate and System:	Drip irrigation using coconut coir or rock wool substrates is commonly used to ensure a stable root environment.
Pruning and Harvesting:	Regularly perform branch pressing and bud removal to promote high-yielding flowering branches. Harvesting is usually carried out when the calyx recurs and the outer petals begin to loosen.
Key Controls:	Flowering period is precisely calculated and controlled through diurnal temperature range, light duration, and accumulated temperature.

Covering material

PEP plastic film: chemically stable, heat-resistant, antifreeze, waterproof, moisture-proof, and drip-proof.

Thickness: 0.12mm/0.15mm/0.18mm/0.2mm;

Lifespan: more than 8 years.

Warranty: 3 years.

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.

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.