Frequently Asked Questions

Find quick answers to common questions about our products, services, and technical specifications.

Q: Can I become a distributor or agent for Demargo in my country?

Yes, we welcome partnership inquiries. Please contact us with your country/region and a brief introduction of your compa…

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Q: How do I know when to replace the filter element or perform maintenance?

Our filters are equipped with differential pressure indicators that show when the element is clogged. For dryers, we pro…

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Q: Do you provide spare parts and after-sales technical support?

Absolutely. We offer long-term spare parts supply (including filter elements, drain valves, and electronic components). …

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Q: What is your lead time for bulk orders?

For standard models, lead time is typically 15–25 working days depending on order quantity. If products are in stock, we…

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Q: How long is the warranty period, and what does it cover?

We offer a 1.5-year warranty on most models. The warranty covers manufacturing defects and premature component failure u…

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Q: Are your products suitable for harsh environments, such as high humidity or corrosive conditions?

Yes. We offer models with stainless steel housings, anti-corrosion coatings, and high-temperature designs suitable for d…

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Q: What certifications and quality control measures do you have in place?

Our products comply with ISO 8573-1 standards. We provide mechanical test reports and video inspection before shipment u…

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Q: Can I get OEM or customized products for my specific project requirements?

Yes. We provide OEM and customization services, including custom housing materials (stainless steel, carbon steel), spec…

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Q: Do you provide test reports or inspection evidence before shipment?

Yes. We offer both mechanical test reports and video inspection before shipment upon request. Each unit undergoes 100% p…

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Q: What is the typical pressure dew point of your air dryers, and how stable is it?

Our refrigerated air dryers achieve a pressure dew point of 2–10°C (35.6–50°F), while our desiccant and combined dryers …

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Still have questions?

Our technical support team is available 24/7 to provide you with detailed information and custom solutions.