Phu My NPK Plant of PetroVietnam Fertilizer and Chemicals Corporation (PVFCCo) has successfully produced many new product formulas. These are formulas of Phu My NPK 17-17-8 + 10S + TE, Phu My NPK 17-15-9 + 10S + TE, Phu My NPK 16-8-17 + TE, Phu My NPK 16-7-17 + TE and Phu My NPK 17-7-17 + TE. With these new formulas, a set of Phu My NPK products manufactured by PVFCCo are diverse in the content of primary, secondary and micro-nutrients, especially the content of secondary elements of sulfur (S) – which is considered the fourth most important nutrient element for crops, after urea, phosphorus and potassium. Sulfur is essential for crops, however, it must be used sufficiently, depending on the type of crop and soil, there are up to 6 groups of NPK formulas for Phu My NPK that add sulfur from low to high level, not only suitable for farmers to choose and use for their specific cultivation, but also reducing fertilizer costs in the context of low agricultural prices.