Name: Automatic Window Installation for Garden Greenhouses and Ventilation
Brand: Foshan Nanhai Sunleaf Metal Products Co., Ltd.
SKU: 2184123872

Question 1

Are you a factory or a trading company?

Accepted Answer

We are a direct factory with over 30 years of experience. SUNLEAF (Foshan Nanhai Sunleaf Metal Products Co., Ltd.) was established in 1992, specializing in aluminum and zinc alloy die-casting, mold design, precision machining, and product assembly. We provide one-stop manufacturing solutions from mold development to finished products.

Question 2

How large is your factory and what is your production capacity?

Accepted Answer

We hold ISO quality management system certification, SGS certification, and have been recognized as a "Guangdong Private Sci-Tech Enterprise". Our products also meet international standards for export to markets including the USA, Germany, and other European countries.

Question 3

How does your thermal actuator work without electricity?

Accepted Answer

Our thermal actuator operates on the principle of thermal expansion. When the temperature rises to 26C, the piston rod extends automatically to open the window for ventilation. When the temperature drops below 22C, the rod retracts to close the window and retain heat. No electricity, batteries, or wiring are required.

Question 4

What is the difference between SL01-14 and SL02-30 models?

Accepted Answer

SL01-14 is a single-spring, single-bracket model with a lifting force of 7-14 kg, ideal for lightweight to medium window sashes. SL02-30 is a dual-spring, dual-bracket model with a lifting force of 15-30 kg, designed for heavier windows and doors, providing extra stability under strong wind conditions.

Question 5

What materials are used in your products?

Accepted Answer

The hydraulic cylinder is made of heavy-duty steel with an enhanced oil seal to prevent leakage. The brackets are made of aluminum alloy with anti-corrosion and UV-proof surface treatment - lightweight, rust-proof, and durable for long-term outdoor use.

Question 6

What is the temperature range and maximum opening of your actuator?

Accepted Answer

The actuator starts opening at 22C, fully opens at 26C, and closes below 22C. The opening temperature can be adjusted within 15-25C. The maximum window opening is 45 cm, providing sufficient airflow for effective greenhouse ventilation.

Question 7

Do you offer OEM or ODM services?

Accepted Answer

Yes, we provide full OEM and ODM services. With our in-house mold design and die-casting capabilities, we can develop custom products according to your specifications - including size, lifting force, bracket design, color, and packaging. We have over 30 years of ODM/OEM experience for clients worldwide.

Question 8

Can you customize the actuator for my specific greenhouse type?

Accepted Answer

Absolutely. Our actuators are compatible with aluminum, galvanized steel, wood, polycarbonate, and glass greenhouses. We can adjust bracket designs, thread sizes, and lifting force to match your specific window or vent structure. Just send us your requirements, and our engineering team will provide a solution.

Question 9

What is your MOQ for custom orders?

Accepted Answer

For standard models (SL01-14 or SL02-30), our MOQ is 49 pieces. For custom OEM/ODM orders, the MOQ depends on the complexity of the design and production requirements. We are flexible and happy to discuss your project needs - contact us for a tailored quote.

Question 10

What is your warranty policy?

Accepted Answer

We offer a 3-year warranty with free replacement (no repair) for any quality issues caused by manufacturing defects. The product is designed for a 6-year service life under normal usage and proper maintenance.

Question 11

How do you ensure product quality?

Accepted Answer

We implement strict quality control from raw material inspection to final assembly. Our production process includes mold design, die-casting, precision machining, surface treatment, and 100% function testing before packaging. We also hold ISO and SGS certifications to guarantee consistent quality.

Question 12

What is the packaging and shipping method?

Accepted Answer

Each actuator is packed in a white carton box (34.7 x 6 x 4.7 cm) with protective inner packaging. For bulk orders, we use standard export cartons. We ship by sea, air, or express courier according to your requirement. Delivery time is 15-30 days depending on order quantity and shipping method.

Question 13

What are your payment terms?

Accepted Answer

We accept T/T (Telegraphic Transfer), L/C (Letter of Credit), and Western Union. For first-time cooperation, we usually require 30% deposit in advance and 70% balance before shipment. For long-term partners, flexible terms can be negotiated.

Question 14

Can I get a sample before placing a bulk order?

Accepted Answer

Yes, samples are available upon request. The sample fee is approximately $25-30 per piece (depending on the model), and the sample fee will be refunded upon confirmation of a bulk order. Shipping costs are borne by the buyer.

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