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about us

who we are

Global Commercial Greenhouse Solution Provider

Sainpoly is a global supplier of commercial greenhouse cultivation solutions. Since our establishment in 2013, we have successfully delivered more than 1,000 greenhouse projects at home and abroad, providing satisfactory greenhouse growing solutions for tens of thousands of growers. Our company boasts a 32,000 ㎡ standardized production plant with an annual greenhouse production capacity of over 200 hectares. We implement standardized full-process production and full-link quality control, enabling efficient fulfillment of global orders and reliable supply support for greenhouse projects of all scales.


We have assembled over 100 professional specialists covering R&D, production, sales, installation and cultivation technology, and built a full-chain closed-loop management system featuring clear responsibilities and efficient cross-department collaboration. We offer one-stop integrated consulting services ranging from preliminary project planning to finished product launch. We integrate raw materials, core supporting systems, various auxiliary parts and cross-border logistics resources, saving clients the trouble of coordinating multiple suppliers for a hassle-free experience. Eco-friendliness, high efficiency and sustainability stand as our core corporate values. Sainpoly is ready to cooperate with clients worldwide to jointly build a new landscape of low-carbon, high-quality modern agriculture. We sincerely welcome partners from all sectors to visit our factory for inspection and business negotiations.

Industry Experience
Exporting Countries
Self-Produced Rate
Greenhouse Materials
Cooperative Clients
Manufacturing Center
Corporate Culture
Empower smart agriculture worldwide and drive the upgrade of agricultural production practices.
To become a leading global manufacturer of commercial greenhouse solutions. With professional technology and reliable quality, we help every grower achieve high-yield, high-efficiency, and high-return business goals.
Core Values
We firmly believe that quality is the cornerstone of an enterprise’s survival. Every framework and component undergoes strict quality inspections to ensure that the products delivered to customers stand the test of time.
Trustworthy to customers, partners and the team.We cherish every trust because we deeply understand that customer satisfaction is the best reputation.
From production processes to service models, from product design to solutions, we never stop innovating. As of now, the company has obtained 15 utility model patents covering key areas such as greenhouse structures, shading systems, and window opening mechanisms.
We do not treat customers as one-time transaction objects, but hope to become partners who grow together with customers and achieve long-term win-win outcomes.
Development History
1997
The company produced greenhouse accessories in early 1997.
2002
Sainpoly started making second-hand greenhouse exhaust fans and gradually began working on domestic greenhouse projects.
2014
We also launched the greenhouse export business, making us the first enterprise in Weifang specializing in greenhouse foreign trade.
2015
We expanded our business to the Uzbekistan market and built extensive cooperative partnerships.
2016
On December 9, 2016, the company was renamed Weifang Sainpoly Greenhouse Equipment Co., Ltd.
2017
We obtained CE certification and gained wide recognition at home and abroad, ranking among China’s top greenhouse exporters.
2019
We further expanded our factory area to 32,000 square meters.
On November 29, 2019, the company was renamed Weifang Sainpoly Greenhouse Equipment Co., Ltd.
2022
We fully upgraded all production equipment, reaching an annual greenhouse construction capacity of 200 hectares.
2024
We developed a custom innovative blueberry greenhouse system tailored to the Australian market and achieved outstanding market results locally.
2025
We had exported greenhouse products to over 80 countries across the world.
On March 12, 2026, the company was renamed Weifang Sainpoly Agricultural Technology Co., Ltd.
Founder's Message

Sainpoly was not built in a day. From a small workshop in 1997 to a greenhouse system provider covering over 80 countries today, every step has been taken steadily and firmly. We always adhere to a simple belief: greenhouses are not cold steel structures, but production tools that carry the hopes of growers.


The road ahead is still long, and we will not stop. We will continue to advance our technology, optimize our services, and turn every greenhouse into works that satisfy our customers. Welcome like-minded friends to join us and do something tangible for global agriculture.

Founder of Sainpoly
David Li
Team Management and Collaboration Philosophy

Our management team has over 15 years of industry experience, with core members covering key areas such as research and development, production, foreign trade, and project management, building an efficient and collaborative management system. We emphasize flat communication and quick response, with each member being highly sensitive to customer needs — because we know that in the greenhouse industry, efficiency is competitiveness.

Certified Patent Strength

Sainpoly was not built in a day. From a small workshop in 1997 to a greenhouse system provider covering over 80 countries today, every step has been taken steadily and firmly. We always adhere to a simple belief: greenhouses are not cold steel structures, but production tools that carry the hopes of growers.


The road ahead is still long, and we will not stop. We will continue to advance our technology, optimize our services, and turn every greenhouse into works that satisfy our customers. Welcome like-minded friends to join us and do something tangible for global agriculture.

Global Market

Since its overseas expansion in 2014, Sainpoly has served over 80 countries and regions. Backed by solid cross-cultural cooperation experience, we provide customized solutions and customs clearance support adapted to local climate and import standards. We are committed to connecting Chinese manufacturing with global farms and sharing the benefits of modern facility agriculture with partners worldwide.

We have built over 200 hectares of shade greenhouses in the US market for the cultivation of medicinal plants.

More than 150 hectares of greenhouses have been built in the Central Asian market for vegetable cultivation.

Our Service Advantages
Based on local climate data and planting needs, we provide a complete set of design solutions including 3D modeling, CAD drawings, and load calculations. Our design team with an average of over 12 years of experience is responsible for the entire process.
32,000 square meters of self-owned factory, with 90% of core products produced in-house.We use robotic welding and laser cutting to control quality and costs from the source.
We provide both on-site and online technical guidance. Field engineers oversee installation and commissioning on-site; our online team provides remote video support and real-time Q&A to ensure high-quality project handover.
We Establish long-term strategic partnerships with international top suppliers such as Follett Glass, Covestro PC boards, and Priva Environmental Control to ensure the quality of core components.
1-year warranty + lifetime technical support, 7×24-hour multilingual response, spare parts warehouses in key overseas markets, and regular parts shipped within 48 hours.
With CE certification, ISO 9001 certification and 15 patents, our products meet import standards in the EU, Middle East, Central Asia and other regions, and we can assist with customs clearance and acceptance.
Contact us
Let’s Build Your Commercial  Greenhouse Together
Share your project details – we’ll provide a tailored solution and a clear roadmap to success.
Global Commercial Greenhouse Solution Provider
As a commercial greenhouse manufacturer, we focus on providing efficient, durable, and cost-effective greenhouse solutions for professional growers and agricultural enterprises worldwide.
Address: 
East Section of Paris Road, Qingzhou Economic Development Zone, Weifang City, Shandong Province
Copyright © 2026 Weifang Sainpoly Agriculture Technology Co., Ltd.Sitemap

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