White crystals with KH₂PO₄ ≥99% (dry basis) and N-P₂O₅-K₂O of 0-52-34, to HG/T2321-2016, in bags. Fully water-soluble and chloride-free, it is used for foliar spray, drip and flush application to promote flowering and fruit set, raise stress tolerance and improve colour and quality.