Heilongjiang
Dairy and beverage production lines require nitrogen as packaging shielding gas to prevent food oxidation and deterioration and extend shelf life; liquid nitrogen is also used for rapid cooling of products to improve production efficiency.
Food-grade liquid nitrogen complies with national standard GB 1886.228 with no harmful residues; after shielding gas packaging, product shelf life is extended by 2-3 times, suitable for long-distance transport and export.
