This is a type of brush-on, room temperature, rapid blackening product. Before use, clean the surface of the part to be blackened of any oil and oxidation scales (oxidation scales can be removed by acid washing or sandpaper polishing), then rinse the metal surface with clean water. Next, apply the original liquid directly to the metal surface using a brush or soft cloth. If necessary, repeat the application; typically, a uniform, deep black finish with strong adhesion and excellent corrosion resistance can be achieved in about ten seconds. After application, oil or varnish should be applied to the blackened film to achieve a glossy finish and enhance corrosion resistance.

Brush-on room temperature rapid blackening liquid is especially suitable for large or extra-long workpieces that are not convenient for soaking in blackening solutions, as well as for partial blackening or blackening repairs on workpieces.

After-Sales Support

1. If you have any questions, please feel free to contact the seller. We will provide patient and factual answers to your inquiries.
2. All products sold in our store come with worry-free after-sales service.
(1) All products sold by our company undergo strict quality inspections by the Quality Control Department, ensuring that each product meets quality standards, giving our customers peace of mind with every purchase!
(2) Lifetime paid maintenance and technical support provided.
3. All products sold by our company undergo rigorous inspections prior to shipment. Upon receiving the goods, please ensure to personally inspect them. Should any damage be found, please refuse acceptance and call the seller immediately. We will promptly negotiate with the delivery driver to handle the matter, to avoid unnecessary losses.
4. Should there be no issues found with the goods, please count the items in your presence upon receipt to avoid any potential loss or damage during transit.

5. Should you have any concerns about the quality, we welcome you to visit our company for an on-site inspection and tour.
6. The seller reserves the right to choose buyers.
7. As a professional manufacturer, we take every transaction with great care. However, objectively speaking, we cannot ensure complete satisfaction or no disputes for every buyer. This may include issues such as shipping, quality disputes, and color discrepancies. Please understand, and feel free to communicate with us if you have any questions—let's resolve them together!
8. To avoid unnecessary disputes and save time for both parties, it is strongly recommended that buyers of "large sizes and large quantities" goods view samples or conduct on-site inspections first!