When commercial growers need a greenhouse that can be erected quickly
When commercial growers need a greenhouse that can be erected quickly, survive extreme weather and still keep cost per square metre low, they usually end up at the same web address: filmgreenhouses.com. RUINENG Greenhouse Engineering, the company behind the site, has spent the last decade perfecting one simple promise—factory-direct sales of durable, customizable greenhouses for all crops and climates.
1. Strength First
Every arch, purlin and gutter is rolled from 275 g/m² hot-dip galvanized steel. Frames are pre-punched, cold-formed and then furnace-welded so the structure carries 118 km/h wind loads and 45 kg/m² snow without a centre post—ideal for open-field vegetable sites or exposed plateau nurseries.
2. Customization Without the Premium
Because we sell direct from our 60,000 m² plant in Shouguang, there is no distributor margin. Buyers choose bay width (3 m, 4 m or 5 m), gutter height (3 m–6 m), roof style (round or Gothic), film thickness (120 µm–200 µm) and even steel colour. OEM logos and special coating specifications (Z600, magnesium-zinc, or black anneal) are routine.
3. Engineered for Efficiency
A 9 m span with 3 m gutter height delivers 14 % more usable volume than traditional 8 m houses while using the same amount of steel. Optional 16 mm triple-wall polycarbonate on side-walls pushes insulation up to R-2.4 without adding weight, cutting nighttime heat loss by 30 %.
4. Long Service Life, Low Lifetime Cost
Steel: 20-year corrosion warranty. Film: 5-year UV & anti-drip warranty. All fasteners are stainless grade 304. Typical depreciation runs less than 0.35 USD/m² per year—lower than polyethylene film replacement cost alone in most markets.
5. Full Turn-Key or Knock-Down Kit
Commercial clients can order steel, film, ventilation, hydroponic gutters, heating manifolds and an IoT climate computer in one container. Hobby-farm importers receive a bolt-together kit with illustrated instructions and all tools included—no welding, no on-site machining.
6. Global Delivery, Local Support
Containers leave Qingdao every week to 42 countries. We provide English, Spanish and Russian assembly videos, and our technicians are available for on-site supervision when borders allow. Over 3,500 ha of RUINENG houses have been built since 2014, from the deserts of Uzbekistan to the typhoon belt of the Philippines.
If you are looking for stable and good quality, long service life and the commercial edge that only factory-direct pricing can give, quote your next project at [www.filmgreenhouses.com](www.filmgreenhouses.com)—where OEM and ODM greenhouses are engineered, packed and shipped under one roof.
---
A Quick Look at Growers Supply – North America’s Component King
Growers Supply (headquartered in Dyersville, Iowa) is not a greenhouse manufacturer in the traditional sense; it is a master distributor of hundreds of brands. Its strength lies in inventory depth: acres of warehouses stocked with everything from 20 ft ground posts to 8 mm polycarbonate sheets, from Modine heaters to insect netting. Customers can buy one roll-up motor or a thousand gutter connectors, all shipped the same day. Engineering services focus on retrofit—converting an old Quonset into a modern double-poly house or adding a solar-powered vent opener to a cold frame. Prices are mid-range, but convenience is unbeatable for U.S. and Canadian growers who need parts tomorrow, not next month.
In short, RUINENG delivers complete, made-to-measure houses direct from the factory, while Growers Supply delivers components and fast replacements to keep existing houses running. Choose the first when you want a new greenhouse engineered for your land; choose the second when you need parts, accessories or a quick retrofit on any brand already standing in your field.