What is the warranty period for the greenhouse?

The main body has a service life of more than 20 years. The frame has a 15-20 year warranty, and the twin-wall polycarbonate sheets have a 10-year warranty.

What is the minimum order quantity?

The minimum order quantity is 500 m2.

What are the payment terms?

We accept T/T, LC, and Western Union.

Galvanized Steel Square Tube Polycarbonate Sheet Greenhouse for Agricultural Use

Name: Galvanized Steel Square Tube Polycarbonate Sheet Greenhouse for Agricultural Use
Brand: WEIFANG SAINPOLY AGRICULTURAL TECHNOLOGY CO., LTD.
SKU: 2207129345

Shandong, ChinaWEIFANG SAINPOLY AGRICULTURAL TECHNOLOGY CO., LTD.

US$20.00-50.00

1,000 Square Meters

Sample price:US$26.00/square meter.Request sample

Product profile

Customization

Available

Thickness

Custom

Shape

Venlo or Pointed Greenhouses

Material

Polycarbonate Board

Section/Bay

4m/8m

Covering Material

Polycarbonate Sheet

Product Name

Polycarbonate Greenhouse

The Main Column

Galvanized Steel Square Tube

Delivery

According to The Required Dimensions

Frame

Hot-Dipped Galvanized Steel

Total Height

3.7-6.7m

Gutter Height

3-6m

Application

Vegetable Fruits Flowers

Frame Material

Hot Galvanized Steel Frame Structure

Advantage

Super Strong Resistance

Instruction for Use

Installation Drawing

Size

Large

Type

Multi-Span Agricultural Greenhouses

Ventilation

Top and Side Ventination

Transport Package

Required by Customers

Specification

Type: Multi-Span Agricultural Greenhouse

Trademark

Sainpoly

Origin

Qingzhou, Shandong Province

HS Code

9406000090

Production Capacity

3 Hectares Per Month

Key features

Customizable Dimensions: Section/Bay and gutter height are customizable to fit specific site requirements.

High-Strength Structure: Hot-dipped galvanized steel frame with triple-A roof structure ensures strong wind and snow resistance.

Durable Polycarbonate Cover: Twin-wall PC sheets offer high light transmission (>80%), anti-UV, and anti-hail properties.

Long Service Life: Main body lasts over 20 years; frame has a 15-20 year warranty; PC sheets have a 10-year warranty.

Professional Installation Support: Includes installation drawings, manuals, and optional on-site engineer supervision for assembly.

Versatile Climate Control: Supports optional shading, heating, cooling, irrigation, and hydroponics systems for diverse crops.

Factory Direct Pricing: Manufacturer direct sales provide competitive pricing without trading company markups.

ISO 9001 Certified Quality: Strict quality standards and international certification ensure reliable product performance.

Company profile

Importers and ExportersYears of Export Experience

WEIFANG SAINPOLY AGRICULTURAL TECHNOLOGY CO., LTD.

Shandong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Designs CertifiedExport Year: 10 years CertifiedNearest Port: Qingdao PortAverage Response Time: ≤3.16h

AI-Powered supplier vetting

SummaryWeifang Sainpoly Greenhouse Equipment Co., Ltd. is a limited company offering greenhouse products, with 29 employees and no stated parent group. It provides design customization, ODM, OEM for well-known brands, and has launched new products in the past year, supported by three R&D engineers. CE compliance is reported. The supplier has inventory capability and offers equipment installation, but lacks an overseas warehouse, overseas showroom, and a valid manufacturing-capacity contract with related subcontractors. Service documentation is weak: no written assessment or corrective-action procedures, and complaint handling has procedures but no written records. Financial information identifies reporting years but provides no substantive financial performance evidence. Customer evidence includes OEM work for well-known brands, while no Fortune 500 cooperation is reported and repeat-buyer preference is 10%–30%.

Supplier typeThe supplier is a limited company with no stated affiliation to a larger company group, offering greenhouse products. Its stated business scope also includes agricultural structures, landscaping, agricultural machinery maintenance, and related agricultural and plastic-product sales.

CertificationsCE certification is explicitly reported for the product, providing evidence of conformity with the stated applicable standards. No additional certifications are identified in the provided information.

After-Sales capabilityThe supplier offers equipment installation and has a complaint-handling procedure, but it has no overseas warehouse or showroom. Service governance is weak because assessment and corrective/preventive-action procedures lack written records, and complaint handling also lacks written records.

R&D capabilityThe supplier reports new products during the past year, provides ODM services, and employs three R&D engineers. However, it has no available SDK, so its innovation capability is evidenced for product development and design services but not for SDK-based integration.

Production capacityThe supplier has in-stock capability, reports one-month lead times in both peak and off-season periods, and identifies ten qualified service-capability suppliers. However, it has no valid manufacturing-capacity contract with related subcontractors, which creates a documented production-governance weakness.

Customization capabilityBoth R&D and general design-service information state customization from customer designs, and the supplier also reports ODM availability. This directly supports capability to develop or manufacture customized greenhouse products.

Client casesThe supplier reports OEM service for well-known brands, providing explicit customer-case evidence. It reports no cooperation with Fortune 500 companies, and repeat-buyer preference is stated at 10%–30%, so the customer track record is present but not broadly demonstrated.

Product Q&A

Q:Are you a trading company or a manufacturer?

We are a factory. Our factory produces all items related to the greenhouse, so we provide the best price.

Q:Do you provide samples? Is it free or extra?

Yes, we can provide samples free of charge, but we don't bear the freight.

Q:How to get a quotation for the greenhouse?

Please let us know how many greenhouses are needed and what will be grown in the greenhouse. So that we can suggest related systems.

Q:How should I choose a greenhouse system?

Please let us know where the greenhouse is (temperature, wind speed).

Q:How to assemble the greenhouse when purchasing?

We have professional after-sales service engineers who will provide planning drawings and installation manuals. You can communicate with him from time to time. If necessary, we can also send engineers to your country to supervise the installation of the greenhouse. Please send a message for specific details.