MAP vs DAP: what is the difference?
MAP and DAP compared: chemistry, nutrient content under Vietnam's QCVN 106:2025/BNNMT, soil reaction, uses and HS codes.
Guides
Plain-language guides to the products we quote: what they are, what the Vietnamese standards require, and how they are used and shipped.
What is DAP fertilizer?
DAP (diammonium phosphate) explained: what it is made of, nutrient minimums under QCVN 106:2025/BNNMT, how to apply it, and HS code 3105.30.
What is phosphoric acid used for?
Phosphoric acid (H₃PO₄) uses in fertilizer, food, metal treatment and water treatment, and how technical and food grades differ under Vietnamese standards.