Buyer-facing candidate for an agricultural high-potassium fertilizer described as NPK 4-0-40 with 44% total nutrients, 7% organic matter, 6% fulvic acid, and granular water-soluble form. Suitable RFQ focus includes confirmation of NPK basis, chloride versus sulfate potassium source, water solubility test method, impurity limits, packing options, export documents, and destination-country fertilizer registration requirements.
Quick buying facts
Identify the grade, package, and import market before comparing suppliers.
Use this page to check the product identity, common specification points, document scope, package notes, and destination-market questions before sending a China sourcing request.
NPK formula: 4-0-40 as listed by source; confirm test basis and nutrient calculation methodWater-soluble granular potassium fertilizer / potassium fulvate compound fertilizerCandidate for RFQ after composition, COA, contaminant, and export-document verification
Check whether this product fits the buyer's actual application.
Clear application, grade, package, and document notes help separate real sourcing demand from a vague price check.
Use context
Common applications
High-potassium crop nutrition programs requiring an NPK 4-0-40 profile
Buyer evaluation for fruit, cocoa, vegetables, rice, wheat, corn, peanut, and other potassium-demanding crops
Distributor portfolio addition for water-soluble potassium fertilizer products
Private-label sourcing where custom packing and label review are required
Tender or bulk procurement requiring COA, SDS, contaminant data, and export documentation
How we compare
Sourcing options
Standard NPK 4-0-40 granular water-soluble potassium fulvate fertilizer
Custom bag sizes such as 20 kg, 25 kg, 40 kg, or buyer-defined packing
Neutral kraft bags, woven bags, or private-label export packaging subject to supplier confirmation
Formula comparison with related potassium fulvate compound fertilizer options
Sample order before bulk procurement, followed by batch-specific COA verification
Human review
Compliance notes
This appears to be a fertilizer mixture rather than a single-CAS chemical; request a composition statement and CAS references for reportable ingredients where applicable
Request COA, SDS, product specification sheet, label draft, certificate of origin, packing list, commercial invoice, and any fertilizer registration or free-sale documents available
Confirm whether the product is classified as dangerous goods for sea, air, or road transport; do not rely only on marketplace listing language
Check destination-country fertilizer import rules, heavy metal limits, chloride limits, microbial claims, organic input claims, and label-language requirements before ordering
If potassium chloride is present, buyers should verify chloride-sensitive crop requirements and any import declaration requirements
Request heavy metals and contaminants data, including As, Cd, Pb, Hg, Cr, moisture, insoluble matter, and particle size distribution
No regulatory approval or import clearance should be assumed from supplier membership badges or marketplace verification status
Buyer search paths
Related sourcing terms
These terms support long-tail discovery while keeping the page focused on useful product and China export buying context.
Share target market, quantity, packaging scope, artwork status, delivery destination, and required documents so CHN Chemicals can prepare a cleaner supplier comparison.
Questions to confirm
Can you provide the latest COA for NPK 4-0-40, organic matter, fulvic acid, pH, moisture, insoluble matter, and particle size?
What are the exact potassium sources and approximate ratio of potassium chloride to potassium sulfate?
What is the chloride content, and can you offer a low-chloride or sulfate-only version if required?
Which analytical methods are used for NPK, organic matter, fulvic acid, and water solubility?
Can you provide heavy metal and contaminant limits for export markets such as EU, GCC, ASEAN, Africa, or Latin America?
Is the product registered or previously exported to our destination country, and what label documents are available?
Can you provide SDS, specification sheet, certificate of origin, invoice, packing list, and non-DG transport statement or DG classification review?
What packaging sizes, pallet options, MOQ, lead time, and container loading quantities are available?
Checks before quote
This appears to be a fertilizer mixture rather than a single-CAS chemical; request a composition statement and CAS references for reportable ingredients where applicable
Request COA, SDS, product specification sheet, label draft, certificate of origin, packing list, commercial invoice, and any fertilizer registration or free-sale documents available
Confirm whether the product is classified as dangerous goods for sea, air, or road transport; do not rely only on marketplace listing language
Check destination-country fertilizer import rules, heavy metal limits, chloride limits, microbial claims, organic input claims, and label-language requirements before ordering
If potassium chloride is present, buyers should verify chloride-sensitive crop requirements and any import declaration requirements
Request heavy metals and contaminants data, including As, Cd, Pb, Hg, Cr, moisture, insoluble matter, and particle size distribution
No regulatory approval or import clearance should be assumed from supplier membership badges or marketplace verification status
Next step
Send the product page with your target quantity and market. A sourcing manager can then confirm sample options, supplier fit, packaging details, and open document gaps.
