As a professional hinge manufacturer serving US hardware distributors and door contractors, our matte black hydraulic soft close hinge features built-in silent damper to stop door slamming and finger pinching. Its upgraded 90° auto hold-open function locks doors steadily without rebound, perfect for ventilation and carrying items in apartments, hotels & offices. Made of thickened anti-rust aluminum alloy, this heavy-duty hinge fits all North American interior wooden doors. We offer factory-direct bulk supply with competitive wholesale prices and full OEM customization, including custom logo, size and surface finish to match US local market demands. Submit inquiries on our website to get free test samples, product catalogs and exclusive bulk quotations.