Answers to common questions about Delin HVAC, our products, quality, shipping, and after-sales support. Can't find what you need? Contact us directly.
We are a direct manufacturer. Foshan Delin Cooling & Heating Equipment Industrial Co., Ltd. operates an 8,000㎡ factory in Foshan, Guangdong, China, with our own CNC machining, automated welding lines, and testing laboratories. No middlemen — you buy factory-direct.
We have been manufacturing refrigeration and heat exchange equipment since 2002 — more than 20 years of continuous production and export experience.
Our factory is in Xin'an Industrial Zone, Danzao Town, Nanhai District, Foshan City, Guangdong Province, China — about an hour from Guangzhou Baiyun International Airport and near the ports of Guangzhou, Shenzhen, and Hong Kong.
Our main products are seafood constant temperature machines (1–30HP), industrial water chillers (1–60HP, air-cooled and water-cooled), titanium evaporators and titanium coils, and stainless steel heat exchangers (shell-and-tube, plate, and coaxial types).
Yes. We provide OEM branding, custom colors and packaging, and ODM development including custom specifications, special voltages, and application-specific designs. Share your requirements and our engineering team will develop a solution.
For standard products the MOQ is typically 1 unit, which is convenient for first-time buyers and sample testing. For custom OEM/ODM projects, MOQ is agreed based on the product specification and tooling involved.
Yes, sample orders are welcome. We can also arrange a factory inspection — online video tour or an in-person visit — so you can verify our quality before committing.
Yes. We supply 110V/60Hz, 220V/50Hz, 380V/50Hz and other configurations to match your destination market. Please specify your power supply when inquiring.
Our products and factory are CE, ISO 9001, and SGS certified. Our quality management system follows international standards and is verified by third-party audits.
Quality is controlled throughout production: incoming material inspection, CNC precision manufacturing, 100% hydrostatic pressure testing, performance verification, and multi-point inspection before packing and shipping.
Yes. We provide full export documentation including commercial invoice, packing list, bill of lading, certificate of origin (C/O or FORM E where applicable), and any inspection certificates your customs authority requires.
For standard in-stock models, we typically ship within 7–15 days. Custom OEM/ODM orders generally take 20–35 days depending on specifications and quantity.
We ship by sea freight, air freight, or international express (DHL, FedEx, UPS). Trade terms commonly used: FOB Guangzhou/Shenzhen, CIF, CFR, and DDP for many destinations. We help arrange export logistics for every order.
For standard orders we accept T/T bank transfer (commonly 30% deposit, 70% balance before shipment) and L/C at sight for larger orders. Payment terms can be discussed based on order value and your purchasing history.
Our standard warranty is 12–18 months from the date of shipment, covering manufacturing defects in materials and workmanship. Warranty terms are stated in our sales contract.
Yes. We provide installation manuals, video guides, and remote technical support via WhatsApp or email. For large projects we can arrange on-site commissioning and training. Spare parts are available for all of our models.
Contact our after-sales team with the model number, serial number, and a description of the fault. Our engineers will diagnose remotely and guide you through the fix or ship the required spare parts quickly.
Talk to our engineers directly — we reply within 24 hours.