
OEM/ ODM Factory Made Design Own Brand Mass HVAC Industrial Ventilation Connectors Duct. OEM/ODM Customization: Supports custom size, own brand design, and sample-based production with dedicated R&D team. Multiple Certifications: Products hold SAA, TUV, CB, CE, and RoHS certifications ensuring high standard quality. Dual Factory Production: Manufactured in two factories located in Ningbo and Wenzhou, Zhejiang Province. Strict Quality Control: Dedicated QC team performs strict inspection on all goods before delivery. Fast Delivery Time: General delivery takes 15-20 days after deposit receipt, depending on order quantity. Refundable Sample Fee: Sample fees are fully refundable once the formal order is confirmed. Wide Application Scope: Suitable for hotels, manufacturing, food & beverage, construction, and mining industries. 3-Year Warranty: Comprehensive 3-year warranty coverage provided for peace of mind.