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Black gum rosin is a dark‑brown solid supplied by Zhengzhou Denglan Industry Co., Ltd. in China. It is formulated as a thickening agent for reclaimed rubber, offering the same performance as yellow gum rosin while lowering material cost. The product exhibits a softening point of 73 °C (R&B) and a maximum acidity of 130 mg KOH g⁻¹. Additional measured limits include unsaponifiable matter not exceeding 6 %, ethanol‑insolubles under 0.06 %, and ash content below 0.05 %.
In the rubber chemicals market, gum rosin grades are typically classified by colour, softening point and acid value, with standard yellow rosin ranging 70‑80 °C and 120‑150 mg KOH g⁻¹; the black variant matches these benchmarks while providing a darker hue that can aid visual inspection. Typical industry specifications also call for moisture content below 0.5 % and a density around 1.05 g cm⁻³, values that are consistent with the supplier’s data set. The material’s thickening action increases elongation percentage in reclaimed rubber compounds, making it suitable for both tire tread production and specialty industrial rubber parts.
Buyers such as tire manufacturers and rubber compounders usually request bulk deliveries in 25 kg paper bags or 500 kg drums, though exact packaging must be confirmed with the supplier. The listing does not disclose minimum order quantity, lead time or payment terms, so prospective importers should query these details directly. Zhengzhou Denglan Industry also offers related chemicals including rubber reclaiming agents and pine‑tar oils, providing an option to source multiple additives from a single Chinese supplier.
| Appearance | Dark brown solid |
| Softening Point (R&B) | 73 °C |
| Acidity (KOH) | 130 mg KOH g⁻¹ max |
| Unsaponifiable Matter | 6 % max |
| Ethanol Insolubles | 0.06 % max |
| Ash Content | 0.05 % max |
| Typical moisture content | up to 0.5 % (standard) |
| Typical density | 1.05 g cm⁻³ (standard) |
| Typical packaging | 25 kg paper bag or 500 kg steel drum (typical) |
| Typical flash point | around 220 °C (typical) |
Zhengzhou Denglan Industry Co., Ltd. is located at No. 199 Nongye Road, Zhongyuan District, Zhengzhou, 450000, China. The supplier holds a "harbor" trust tier on the platform, indicating a moderate level of verification, although the response rate shown is 0 % and no average response time is recorded. This profile suggests the company is reachable via the listed email address but may require proactive follow‑up.
The company’s catalogue includes black gum rosin for reclaimed rubber as well as other rubber chemicals such as reclaiming agents, specially formulated pine‑tar oil, environmentally‑friendly oils and reinforcing agents. All items are presented as bulk industrial chemicals, and the supplier invites enquiries for technical specifications and sample requests.
| Business Type | Supplier |
| Year Established | Recently Joined |
| Employees | Contact Supplier |
| Annual Revenue | Contact Supplier |
| Main Products | View Products Tab |
| Major Markets | Global |
| Response Time | <4h |
| Response Rate | New Supplier |
Before placing an order, importers should obtain the latest Certificate of Analysis and verify that the softening point, acidity and impurity limits match the figures provided. Request a sample if possible, and confirm that the supplier’s "harbor" trust tier aligns with your risk tolerance. Checking the supplier’s registered address in Zhengzhou and any available business licences adds an extra layer of confidence.
Logistics for Chinese chemical shipments typically involve FOB or CIF terms from the nearest port, with lead times ranging from 30 to 45 days after order confirmation. Payment is often secured by a confirmed Letter of Credit, but the exact incoterm and payment schedule must be negotiated directly with Zhengzhou Denglan Industry. Clarify container loading plans and whether the rosin will be shipped in paper bags or bulk drums.
Quality assurance should include a third‑party inspection before loading, focusing on the measured parameters such as softening point, acidity and ash content. Arrange for the supplier to provide test reports complying with ASTM or ISO standards, and ensure customs documentation lists the correct HS code for gum rosin. Maintaining records of these checks will streamline clearance and protect against non‑conformity issues.
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When sourcing Black Gum Rosin For Reclaim Rubber for your business, securing the right balance of quality and cost is essential. Zhengzhou Denglan Industry Co., Ltd., a verified supplier based in China, offers this product for international export. By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $450550/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is a staple in the Raw Rubber sector with strong demand from importing countries worldwide.
Importing Black Gum Rosin For Recla requires careful attention to shipping logistics, customs compliance, and secure payment terms. Zhengzhou Denglan Industry Co., Ltd. offers flexible shipping options such as Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. Common payment methods for international B2B transactions include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P). All transactions and RFQs are facilitated through EximNext, a leading online B2B marketplace designed to make cross-border trade secure and efficient.
Finding trustworthy partners is the foundation of successful importing. The supplier of this Black Gum Rosin For Recla has been verified on our platform. Whether you are a distributor, wholesaler, or procurement manager, you can request a free quotation, ask for product samples, and finalize your bulk purchase with confidence. EximNext hosts thousands of verified manufacturers and exporters across 200+ countries. Explore similar products in the Raw Rubber category and connect with top-tier exporters on our comprehensive B2B marketplace. Start your sourcing journey today.
Importing Black Gum Rosin For Recla requires careful attention to shipping logistics, customs compliance, and secure payment terms. Common shipping options include Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. Buyers should verify import duties in their destination country. Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P).
The current listed wholesale price for Black Gum Rosin For Reclaim Rubber from Zhengzhou Denglan Industry Co., Ltd. is $450550/Bags on FOB terms from China. Prices may vary depending on order volume, packaging, and destination. For the most accurate bulk quote, send a direct RFQ to Zhengzhou Denglan Industry Co., Ltd. through EximNext.
The supplier, Zhengzhou Denglan Industry Co., Ltd., has set a Minimum Order Quantity (MOQ) of 1 Bags for Black Gum Rosin For Recla. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
The HS Code classification for Black Gum Rosin For Reclaim Rubber depends on the specific grade and form. Contact Zhengzhou Denglan Industry Co., Ltd. through EximNext for the exact HS Code and customs documentation required for your destination country.
To import Black Gum Rosin For Recla from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Zhengzhou Denglan Industry Co., Ltd.. Ensure you have the necessary import licenses for Raw Rubber products in your destination country.
Yes, Zhengzhou Denglan Industry Co., Ltd. is a verified supplier on EximNext. You can view their complete company profile, business registration details, certifications, and export history before placing a bulk order.
For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to Zhengzhou Denglan Industry Co., Ltd. through EximNext.
Zhengzhou Denglan Industry Co., Ltd. offers Black Gum Rosin For Recla with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Black Gum Rosin For Recla is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Zhengzhou Denglan Industry Co., Ltd. through our platform.
Zhengzhou Denglan Industry Co., Ltd. maintains international quality certifications. These ensure that the Black Gum Rosin For Recla meets international quality, safety, and regulatory standards required for cross-border trade.
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Zhengzhou Denglan Industry Co., Ltd. will respond with a detailed wholesale quote including FOB pricing, lead time, and payment options.
Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), Documents against Payment (D/P), and Escrow services. Confirm accepted terms directly with Zhengzhou Denglan Industry Co., Ltd..
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