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Introducing our eco-friendly, chromium-free black zinc passivation solution, Q/YS.504-2 (Yishun Brand). This liquid solution is slightly neutral and extensively used for the passivation of zinc coatings and zinc alloys. The resulting passivation film exhibits a striking black color, making it ideal for applications such as rack plating, barrel plating, screws, and automotive and motorcycle parts. With its straightforward usage process involving simple dilution with water at room temperature and an immersion time of 30-60 seconds, this product offers both convenience and efficiency. Available in 25KG drums for direct purchase from the manufacturer, it's a reliable choice for your most pressing projects.
| Parameter | Value |
| Product Name | Zinc Blackening Agent Q/YS.504(YiShun) |
| Form | Liquid |
| pH | Near-neutra |
| Stability | High |
| Ease of Use | Simple |
| Environmenta | Clean and sanitary |
| Film Uniformity | Even |
| Adhesion | Strong |
| Salt Spray Resistance | Over 300 hours |
| Heavy Metal Content | None |
| Toxicity | Non-toxic |
| Odor | Odorless |
| Eco-friendlines5 | Yes |
| Application Method | lmmerse |
| Dilution Ratio | 1:1 with water |
| Temperature Range | 80°C-90°C |
| Processing Time | 3-5 minutes |
| Packaging | 25KG per barrel |
| Sales Channel | Direct from Manufacturer |
**Company Profile: Guangzhou Yishun Chemical Co. Ltd.**
Guangzhou Yishun Chemical Co. Ltd., established in 2010, is a high-tech enterprise specializing in the development, manufacturing, and marketing of chemical products. With over a decade of technical expertise, our products are not only used nationwide but also exported to Europe, America, the Middle East, Southeast Asia, and other regions around the world. Our focus areas include R&D, manufacturing, and marketing of various metal and non-metal surface treatment process fluids, industrial cleaners, and information chemicals.
At Yishun Chemical, we pride ourselves on our ability to develop custom industrial cleaners, chemical stripping agents, and surface treatments for both metals and non-metals, as well as electronic information chemicals. We strive to become a more innovative fine chemical enterprise, continuously providing better concepts, products, and services to various industries. Our goal is to promote the chemical industry to new heights while adhering to a healthy development strategy of "Environmental Protection and Green Home."
Guided by "environmental and green" principles, we lead our R&D and production efforts to manufacture "high, precise, and advanced" chemical products. We continuously improve our innovation system, enhance sustainable development capabilities, and strive to create value for both the enterprise and society. Our aspiration is to be a global leader in eco-friendly chemicals, contributing to a greener and more sustainable future.
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