Guangdong Suitinn Compound Fertilizer Co., Ltd.
Founded in Guangdong, China, Suitinn is a professional fertilizer manufacturer and supplier serving agricultural and industrial customers worldwide. We focus on compound NPK, water-soluble fertilizers, phosphate and nitrogen products, and value-added fertilizers carrying secondary and trace elements.
Production is carried out with our supply partner, Guizhou Phosphorus Group, whose four production bases in Guizhou, Gansu, Sichuan and Fujian give us access to consistent compound NPK, water-soluble grades and phosphate raw materials. Suitinn handles the commercial side: formulation confirmation, documentation, quality coordination and shipment.
Our customers are importers, distributors and large growers. What they buy from us is a specification they can defend, a lot that matches it, and a shipment that leaves when we say it will.
HOW WE CONTROL QUALITY
Incoming materials
Phosphate, ammonia and potash checked against the supplier certificate before production.
In-process control
Slurry density and granulation parameters logged for every batch.
Lot analysis
Nutrients, moisture, granule strength, chloride and heavy metals tested per lot.
Before shipment
COA issued against the lot, bag weight checked, loading photographed.
| Test item | Why it matters |
|---|---|
| Total N · P₂O₅ · K₂O | Contract compliance |
| Water-soluble P₂O₅ | The share available in the season of application |
| Moisture and granule strength | Caking and fines during shipping |
| Chloride and biuret | Crop safety on sensitive species |
| Hg · As · Cd · Pb · Cr | Import limits in destination markets |
SUPPLY AND SERVICE
Custom formulation
N-P-K ratio, secondary nutrients and granule size adjusted to your market.
OEM & private label
Your bag design and label wording, printed in the production run.
Documents
Specification sheet, COA, SDS and registration support files.
Logistics
FOB or CIF from Zhanjiang, Maoming and Shenzhen.