Sourcing ammonium sulfate from China requires more than a supplier list. It requires verification, specification alignment, and logistics coordination.
China is the world’s largest producer of ammonium sulfate, offering cost efficiency, consistent bulk supply, and multiple grades from agricultural to industrial. However, supplier quality varies significantly.
Some manufacturers operate according to international standards. Others struggle with documentation and quality control. This guide provides a data-driven comparison of the top seven ammonium sulfate manufacturers in China, followed by a practical framework for sourcing decisions.
If you need verification support at Chinese ports, contact our procurement team directly.
Why Source Ammonium Sulfate from China
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China dominates this market for four reasons.
First, lower production and labor costs create significant price advantages.
Second, large-scale production capacity allows manufacturers to fulfill bulk orders consistently.
Third, export experience means many companies understand international shipping requirements.
Fourth, China offers variety across agricultural, industrial, and food-grade options. For importers, distributors, and agribusinesses, these factors make China a highly attractive sourcing destination.
Top 7 Ammonium Sulfate Manufacturers in China
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The table below compares manufacturers on the basis of available public data. Capacity figures are estimates. Request current production data directly from each manufacturer before committing.
| Manufacturer | Annual Capacity | Primary Grade | MOQ (tons) | Key Export Markets | Lead Time (days) |
| Sinopec | 5 million+ tons | Industrial / Agricultural | 500+ | Global | 30–45 |
| Sinofert | 2 million+ tons | Agricultural | 200+ | Southeast Asia, Africa | 25–40 |
| Shandong Yuyuan Group | 800,000 tons | Agricultural | 100+ | Southeast Asia, Middle East | 20–35 |
| Tianjin Crown Champion Industrial Co., Ltd. | 200,000 tons | Agricultural | 50+ | Africa, Europe, Southeast Asia | 15–25 |
| Tianjin Solinc Fertilizer Co., Ltd. | 150,000 tons | Agricultural | 50+ | Africa, Southeast Asia | 15–25 |
| Hebei Sanyuanjiuqi Fertilizer Co., Ltd. | 100,000 tons | Agricultural | 100+ | Domestic focus | 20–30 |
| Anhui Runquan Trading Co., Ltd. | N/A (multi-factory) | Variable | 25+ | Africa, Southeast Asia | 15–25 |
Manufacturer Notes For Ammonium Sulfate Manufacturers in China
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1. SINOPEC GROUP
Sinopec operates at a scale few competitors can match, with integrated upstream and downstream chemical production. For ammonium sulfate, this translates into high consistency in output and strong compliance with international standards.
Procurement Considerations:
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- Pricing is typically 5–10% above market average due to state-owned positioning
- Less flexibility on MOQ and contract terms
- Slower negotiation cycles due to internal approval structures
Best suited for buyers prioritizing supply security and consistency over price flexibility.
2. SINOFERT HOLDINGS LIMITED
Sinofert benefits from strong government backing and a well-developed national distribution network. The company is structurally stable and reliable for long-term supply agreements.
Procurement Considerations:
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- Pricing often sits at a premium due to brand and stability
- Export allocations may be influenced by domestic demand priorities
- Less responsive for small or short-term orders
Suitable for buyers seeking low-risk, long-term procurement relationships, especially at scale.
3. SHANDONG YUYUAN GROUP
A volume-driven producer focused on agricultural-grade ammonium sulfate. Competitive pricing is a key advantage, particularly for bulk fertilizer distribution.
Procurement Considerations:
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- Batch consistency can vary across production lines
- Requires strict pre-shipment inspection to confirm nitrogen content and moisture levels
- Documentation quality may depend on export channel used
4. TIANJIN CROWN CHAMPION INDUSTRIAL CO., LTD
An export-oriented supplier with established trade routes into Africa, Europe, and Southeast Asia. Known for responsive communication and flexible packaging options.
Procurement Considerations:
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- Operates as a trading + distribution hybrid, not always the original manufacturer
- Quality depends on source factory selection per shipment
- Requires clarity on factory origin and batch traceability
Suitable for buyers who value logistics support and communication, but should enforce origin verification.
5. TIANJIN SOLINC FERTILIZER CO., LTD.
A well-branded exporter with a broad fertilizer portfolio and structured export processes. Strong in documentation and international trade handling.
Procurement Considerations:
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- Similar to other exporters, may source from multiple upstream manufacturers
- Pricing includes service and branding premium
- Quality consistency depends on supplier network management
Best for buyers needing smooth export execution, but not necessarily the lowest-cost source.
6. HEBEI SANYUANJIUQUI FERTILIZER CO., LTD
Focused on domestic fertilizer production with growing export activity. Offers competitive pricing for agricultural-grade ammonium sulfate.
Procurement Considerations:
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- Export experience is more limited compared to established exporters
- Documentation and packaging standards may require additional verification
- Better suited for regional or mid-scale buyers
Viable for cost-driven procurement, but requires closer supervision during export preparation.
7. ANHUI RUNQUAN TRADING CO., LTD
A trading company with access to multiple manufacturing partners, offering flexibility in pricing and specifications.
Procurement Considerations:
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- Not a producer—quality depends entirely on third-party factories
- Risk of inconsistent batches across shipments if not tightly controlled
- Requires strict contract specifications and pre-shipment inspection
Useful for price optimization and mixed sourcing, but carries higher supply chain variability risk.”
How to Verify These Suppliers Before You Pay
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A supplier list is a starting point, not a guarantee. We have inspected chemical shipments at Tianjin, Shanghai, and Lianyungang ports where the product on the dock did not match the contract.
Purity levels were incorrect. Packaging was substandard. Documentation was falsified. That is why we inspect. Our team visits factories, verifies export authorization, and conducts pre-shipment quality checks.
For ammonium sulfate, we test nitrogen content, moisture levels, and crystal size against your specifications. Learn more about our chemical sourcing verification process.
CAMAL operates on the ground in China to close this gap through structured verification at every stage of the supply chain. This includes factory verification to confirm the actual producer, batch-level quality checks against your agreed specifications, and pre-shipment inspection with random sampling and on-site testing.
We also supervise container loading to ensure the correct product is packed, sealed, and documented before it leaves the port.
By introducing an independent control layer, CAMAL reduces the risk of concentration mismatch, substandard packaging, and documentation errors, issues that typically only surface after the shipment has arrived.
Understanding how verification actually works in China is critical before committing to any supplier.
Our Youtube channel shows real factory visits, inspection processes, and shipment checks carried out on the ground:
https://www.youtube.com/@camalgroup
What Buyers Should Look for When Sourcing Ammonium Sulfate
A high-contrast photograph of translucent, crystalline ammonium sulfate granules piled together, showcasing their distinct square and rectangular geometric shapes against a dark black background.
Buyers often focus only on price. This is a mistake.
Sourcing ammonium sulfate internationally requires attention to five specific areas.
1. Product Specifications
Confirm the nitrogen content (typically 21 percent minimum), moisture levels (usually below 1 percent), and crystal size (granular versus powder versus crystalline). Different applications require different specifications. A mismatch on a 500-ton order can cost $50,000 or more in rejected product and return shipping.
2. Packaging Options
Most suppliers offer 25kg or 50kg bags as well as jumbo bags of 500kg to 1000kg. If you are importing into Brazil or other markets with challenging port conditions, consider packaging durability and ease of handling at ports.
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3. Certifications
Look for ISO certification, SGS inspection reports, and Certificates of Analysis (COA). These documents help ensure quality and compliance with your local regulations.
4. Minimum Order Quantity (MOQ)
Some manufacturers require a 20-foot container minimum. Larger manufacturers like Sinopec require bulk vessel orders. Trading companies like Anhui Runquan may offer more flexible MOQs for smaller buyers.
5. Logistics and Shipping
Ask whether the supplier handles FOB or CIF terms. Confirm whether the supplier can ship to Lagos, Mombasa, Durban, or your target port. Request typical lead times from order to departure. A good supplier will make logistics smooth and predictable.
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Need help verifying these specifications with Chinese suppliers?
WhatsApp us for a free consultation:
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Pricing Volatility in Global Fertilizer Supply Chains
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Ammonium sulfate prices are not static because they are influenced by multiple interconnected global and regional factors. The most important drivers include global demand cycles, raw material costs, and international shipping rates.
1. Global Demand Cycles (Especially Fertilizer Demand)
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Ammonium sulfate is primarily used as a nitrogen fertilizer, which means its demand is closely tied to agricultural planting seasons and crop cycles. During peak farming periods—such as pre-planting seasons in major agricultural regions like South America, Southeast Asia, and parts of Africa—demand increases sharply. This seasonal surge puts upward pressure on prices as buyers compete for limited export allocations from Chinese producers. Conversely, during off-peak agricultural periods, demand weakens, often leading to softer pricing and more negotiation leverage for buyers.
2. Raw Material and Production Cost Variations
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Production costs in China are heavily influenced by upstream inputs from the steel and chemical industries, particularly caprolactam and coke oven by-products. When these upstream industries experience cost increases or production slowdowns, ammonium sulfate pricing adjusts accordingly. Environmental regulations or factory shutdowns in key industrial provinces such as Shandong can also restrict supply, causing temporary price spikes.
3. Shipping Rates and Freight Market Volatility
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International freight costs are one of the most unpredictable components in landed chemical pricing. Container availability, fuel prices, port congestion, and global trade disruptions all directly impact shipping rates. For example, when container shortages occur or shipping lanes become congested, freight rates can rise significantly, increasing the total landed cost even if factory prices remain unchanged. For bulk fertilizer shipments, these logistics fluctuations can represent a substantial portion of final procurement cost.
Because of these combined variables, ammonium sulfate pricing is highly time-sensitive. A quotation received in one quarter may no longer reflect actual market conditions just weeks later. This is why static pricing benchmarks are often misleading in procurement planning.
For serious buyers, the more reliable approach is to treat pricing as a live market signal and always validate current FOB offers directly with multiple suppliers before making procurement decisions.
We do not publish current prices because they change too frequently. A quote from March 2026 may be useless by May 2026.
Instead, follow this process:
- Request current FOB China pricing directly from three to five shortlisted suppliers. Send them the same specification sheet so you can compare like for like.
- Ask each supplier to quote in US dollars. This removes currency fluctuation risk from your comparison.
- Be cautious of any price that is more than 15 percent below the average of your other quotes. That supplier is likely cutting corners on quality, documentation, or packaging.
If you need recent price benchmarks before you start requesting quotes, WhatsApp us with your volume and grade requirements. We will share what other buyers are paying. No obligation.
WhatsApp us for a free consultation:
WhatsApp Us for Free a Consultation
Common Procurement Errors to Avoid When Sourcing Ammonium Sulfate from China
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Watch out for these three costly errors when sourcing for ammonium sulfate from China:
- Price-Driven Supplier Selection Without Verification
Choosing a supplier based on the lowest price alone is one of the most common procurement mistakes. In the Chinese chemical market, unusually low pricing often correlates with hidden trade-offs such as diluted concentration, inconsistent batch quality, or weak packaging standards. Every supplier should be validated through sample testing and third-party inspection before any bulk commitment is made. - Skipping Sample Testing Before Bulk Orders
Proceeding directly to a full container order without first testing samples significantly increases procurement risk. Proper sample evaluation typically requires 10 to 14 days, including international courier delivery and independent laboratory analysis. This stage should always be factored into the procurement timeline, as it provides the only reliable confirmation of actual product concentration and impurity levels before financial exposure. - Ignoring Supplier Communication Behavior During Negotiation
Supplier responsiveness and clarity during the negotiation phase is a strong indicator of post-payment reliability. Vendors that are slow, inconsistent, or vague during pre-contract discussions often exhibit similar or worse behavior after payment has been made. Communication quality should therefore be treated as an operational risk signal, not just a sales interaction detail.
First-Time Buyer Execution Plan (Timelines, Costs & Outputs)
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If you are just getting started, examine the table below:
| Stage | Key Actions | Timeline | Typical Costs (USD) | Expected Output |
| 1. Supplier Shortlisting | Identify 2–3 suppliers, request COA, MSDS, and licenses, and align on specifications | 2–4 days | $0 | Qualified suppliers ready for sampling |
| 2. Sample Request & Testing | Request production samples, send to an independent lab, and test concentration and impurities | 10–14 days | $50–$120 (basic test) $150–$300 (full analysis) per sample |
Verified chemical composition and quality |
| 3. Factory Verification | Confirm manufacturer versus trader, and check production capability and raw material sourcing | 1–2 days | $300–$800 | Verified supplier legitimacy and capability |
| 4. Pre-Shipment Inspection | Random sampling, on-site testing, and packaging and labeling inspection for UN compliance | 1–2 days | $250–$600 per container | Confirmed product quality before shipment |
| 5. Loading Supervision | Monitor container filling, verify the correct batch, and check seals and documentation | Same day | $150–$300 (often bundled) | Correct product loaded and sealed |
| 6. Trial Shipment | Place a one-container order and monitor production, shipping, and delivery | 40–60 days total | Product + freight costs | Real-world supplier performance validation |
| 7. Scale & Supplier Lock-In | Increase volume, negotiate pricing, and maintain inspection protocols | Ongoing | Variable | Stable, verified supply chain |
For buyers also sourcing heavy equipment from China, we offer the same verification and inspection services across industrial machinery and vehicles.
Frequently Asked Questions (FAQ)
1. What is ammonium sulfate used for?
Ammonium sulfate serves two main purposes. In agriculture, it is a nitrogen fertilizer that also provides sulfur, which is essential for plant growth. Farmers apply it to crops such as corn, wheat, rice, and canola, particularly in soils that are deficient in sulfur.
In industry, ammonium sulfate is used in water treatment as a coagulant aid, in flame retardant formulations for plastics and textiles, and as a raw material in the production of other chemicals. It is also used in food processing as a dough conditioner and in the production of yeast.
2. What is the standard nitrogen content of ammonium sulfate?
Agricultural-grade ammonium sulfate contains 21 percent nitrogen by weight. It also contains 24 percent sulfur. This combination makes it valuable for crops that need both nutrients.
Industrial-grade ammonium sulfate may have slightly different purity requirements depending on the application, but the nitrogen content typically remains near 21 percent.
3. How much does ammonium sulfate cost per ton?
We do not publish current prices because they change too frequently based on global demand, raw material costs, and shipping rates. A quote from March 2026 may be obsolete by May 2026. Instead, follow this process: request current FOB China pricing directly from three to five shortlisted suppliers.
Send each supplier the same specification sheet so you can compare quotes accurately. Ask for pricing in US dollars to remove currency fluctuation risk. Be cautious of any price that is more than 15 percent below the average of your other quotes, as that supplier is likely cutting corners on quality, documentation, or packaging. If you need recent price benchmarks before you start requesting quotes, WhatsApp us with your volume and grade requirements, and we will share what other buyers are paying.
4. Is ammonium sulfate suitable for all crops?
No. Ammonium sulfate works best for crops that require both nitrogen and sulfur. These include corn, wheat, rice, canola, and alfalfa. It is also effective in alkaline soils where sulfur helps lower pH.
However, it is less suitable for crops that prefer acidic soil conditions, such as blueberries and potatoes, unless careful pH management is applied. For these crops, other nitrogen sources like urea or calcium ammonium nitrate may be better options. Always conduct a soil test before selecting a fertilizer.
5. How do I verify a supplier in China?
Use third-party inspection services to confirm three things.
First, factory legitimacy: visit the facility or hire an inspector to verify that the supplier actually manufactures ammonium sulfate and does not simply repackage product from unknown sources.
Second, product quality: collect samples and send them to an independent laboratory for analysis of nitrogen content, moisture levels, and crystal size.
Third, export documentation: confirm that the supplier can provide Certificates of Analysis, commercial invoices, packing lists, bills of lading, and any required export licenses. We offer all of these verification services. Learn more about our chemical sourcing verification process.
6. Can ammonium sulfate be used for industrial applications?
Yes. In addition to agriculture, ammonium sulfate is used in industrial processes such as water treatment, where it acts as a coagulant aid to remove impurities. It is also used in flame retardant formulations for plastics, textiles, and wood products.
The chemical serves as a raw material in the production of ammonium persulfate and other specialty chemicals. It is used in the food industry as a dough conditioner and in yeast production. Industrial applications typically require higher purity than agricultural grade.
Always confirm the required specifications with your supplier before ordering.
7. What is the difference between granular and crystalline ammonium sulfate?
Granular ammonium sulfate consists of larger, round particles that are uniform in size. This form is ideal for bulk fertilizer application because it flows easily through spreading equipment, produces less dust, and can be blended with other granular fertilizers.
Crystalline or powder ammonium sulfate consists of smaller, irregular particles. This form dissolves faster in water, making it suitable for industrial applications, liquid fertilizer blends, or situations where quick dissolution is required.
However, powder forms can produce dust, which may be a handling concern in some environments. Choose granular for dry soil application. Choose crystalline or powder for liquid mixing or industrial use.
Conclusion
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China remains one of the most reliable sources of ammonium sulfate globally, but procurement success is not determined by supplier selection alone. It is determined by how well you define specifications, control quality, and verify execution before shipment.
Large producers like Sinopec and Sinofert Holdings Limited offer scale and consistency, while export-focused suppliers such as Tianjin Crown Champion Industrial Co., Ltd. and Tianjin Solinc Fertilizer Co., Ltd. provide flexibility and international logistics support.
The difference between a successful order and a failed one is rarely price but verification discipline at every stage of the supply chain.
At CAMAL, we operate as a procurement control layer on the ground in China. We do not rely on supplier assurances. We verify:
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- Actual product specifications against contract terms
- Packaging integrity for export and port handling
- Documentation accuracy before shipment release
- Factory legitimacy and production capability
Across our inspections, approximately one in six shipments presents a material issue, ranging from concentration deviation to packaging failure. These are risks that are not visible on a proforma invoice.
In industrial chemical sourcing, cost savings are often lost in execution. The objective is not to find the lowest price,it is to ensure that what you contract is exactly what arrives.
Before transferring any deposit or confirming shipment, procurement teams should have a clear verification protocol in place. Whether managed internally or through a partner like CAMAL, this step is not optional at scale, it is a core risk control function.
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