Granular compound fertilizer listed as NPK 18-5-5 with customizable granule size and optional medium or trace element adjustment for agricultural buyers. Candidate requires confirmation of nutrient assay basis, chloride/sulfate source, moisture, particle size distribution, micronutrient levels, heavy metal limits, SDS, COA, labeling, and destination-market fertilizer registration requirements before RFQ or import planning.
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.
CAS status: not applicable as a formulated fertilizer mixture; request CAS/EC information for individual nutrient salts or additives if required for registrationCompound NPK fertilizer / granular agricultural fertilizer blendNeeds specification and compliance document verification before buyer RFQ
Declared grade: NPK 18-5-5; confirm whether values are total N, available P2O5, and soluble K2O
Appearance: granular; particle size stated as customizable, buyer should request target range and tolerance
Nutrient customization: medium and trace elements may be adjusted; page references calcium, magnesium, molybdenum, copper, manganese, and chelated micronutrients
Raw material note: page references kelp-based inputs and bio-enzyme processing; request composition breakdown and whether organic extract content is quantified
Soil reaction: listed as physiological neutral / chemical neutral; request pH test method and specification range
Moisture: not disclosed; request maximum moisture and anti-caking specification
Impurity checks: request heavy metals, insoluble matter, chloride content, biuret if urea-based, and pathogen/organic contaminant data where relevant
Certification: supplier page references ISO9001; request current certificate scope and validity
CAS status: not applicable as a formulated fertilizer mixture; request CAS/EC information for individual nutrient salts or additives if required for registration
Who uses this page
Target buyers
Fertilizer importers and distributors
Agricultural input wholesalers
Private-label fertilizer brands
Plant nutrition formulators seeking NPK granules with optional micronutrients
Large farms or plantation procurement teams requiring custom nutrient profiles
Trial procurement where nutrient analysis and contaminant testing are required
Specification alignment for crop-focused fertilizer distribution programs
How we compare
Sourcing options
Request standard NPK 18-5-5 granular grade with supplier's existing specification
Request customized granule size and packing format for local distribution channels
Request micronutrient-adjusted grade with declared Ca, Mg, Mo, Cu, Mn, or other trace elements
Request chloride-controlled or sulfate-based formula if required by crop or market specification
Request pre-shipment third-party inspection for nutrient assay, moisture, particle size, and heavy metals
Human review
Compliance notes
Fertilizer mixtures are often regulated by destination-country fertilizer, customs, labeling, and contaminant rules; buyer should verify local registration before purchase
Request SDS, COA per lot, TDS/specification sheet, packing list, invoice, certificate of origin, ISO certificate, and any fertilizer registration or test reports available
Confirm HS code, declared composition, and whether the product is classified as dangerous goods for sea/air transport based on the final formula
Do not rely on marketing claims such as stress resistance, disease reduction, or soil remediation without local efficacy and registration review
Check heavy metal limits, nutrient tolerance rules, pathogen limits if organic inputs are present, and restricted substances for the target market
Confirm whether kelp-derived components trigger bio-stimulant, organic input, or plant-growth regulator classification in the destination market
No regulatory approval, customs clearance, or import eligibility is guaranteed by the listing; buyer should complete independent compliance review
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
Please provide the full guaranteed analysis for NPK 18-5-5, including total nitrogen forms, available P2O5, soluble K2O, Ca, Mg, and each trace element.
What are the standard and customizable granule size ranges, dust percentage, crushing strength, and caking performance?
Can you provide recent COA data from three production batches, including moisture, pH, chloride, insoluble matter, and heavy metals?
What raw material sources are used for nitrogen, phosphorus, and potassium, and is the formula chloride-based or sulfate-based?
Is the product a physical blend, chemical compound fertilizer, coated granule, or organo-mineral formulation?
What percentage of kelp extract or organic component is included, and which test method is used to quantify it?
Which export documents can be supplied with each shipment: SDS, TDS, COA, certificate of origin, phytosanitary-related statement if applicable, and ISO9001 certificate?
What is the standard packaging for export orders, and can you support 10 kg barrels, 25 kg bags, 50 kg bags, or jumbo bags?
Checks before quote
Fertilizer mixtures are often regulated by destination-country fertilizer, customs, labeling, and contaminant rules; buyer should verify local registration before purchase
Request SDS, COA per lot, TDS/specification sheet, packing list, invoice, certificate of origin, ISO certificate, and any fertilizer registration or test reports available
Confirm HS code, declared composition, and whether the product is classified as dangerous goods for sea/air transport based on the final formula
Do not rely on marketing claims such as stress resistance, disease reduction, or soil remediation without local efficacy and registration review
Check heavy metal limits, nutrient tolerance rules, pathogen limits if organic inputs are present, and restricted substances for the target market
Confirm whether kelp-derived components trigger bio-stimulant, organic input, or plant-growth regulator classification in the destination market
No regulatory approval, customs clearance, or import eligibility is guaranteed by the listing; buyer should complete independent compliance review
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.
