Main products: aluminum foil bag, vacuum bag, shielding bags, aluminum bags, board vacuum bags, cooking food vacuum bag, nylon vacuum bag, anti-static bags and other packaging materials, metal. Vacuum known as polyamide 66 (polyamide 66) or nylon 66 (nylon 66). Yellowish translucent or milky white opaque resin. The relative density of 1.14 to 1.15, the melting point of 259 ~ 267 ℃. Abrasion resistance, oil resistance, excellent self-lubricating property, heat resistance, strength, rigidity is the highest in the aliphatic nylon varieties. Tensile strength 75.9 ~ 82.9MPa, compressive strength 91MPa, Izod impact strength (notched) 4kJ / m, heat distortion temperature (1.82MPa) 75 ℃, hardness R120, the volume resistivity of 1015Ω? Cm, the dielectric strength of 35kV / mm, self-extinguishing. From adipic acid and hexamethylene diamine condensation reaction. The extrusion, injection molding, blow molding and other methods. Can enhance, filling, alloy modification. Widely used as fibers, tire pressure, also known as curtain vacuum packaging, is based on the principle of atmospheric pressure, the main role of the vacuum bag is oxygen, in order to help prevent food spoilage or deterioration. Vacuum packaging is to food packaging bag and oxygen within the cell by pumping deprived, so that microbial processes in the loss of "living environment". Vacuum food can prevent oxidation, the food does not taste, deterioration reduce the loss of vitamin A and C. Vacuum packaging materials commonly used three-layer composite film or aluminum foil composite film made three sealed bags. Vacuum packing machines commonly used outside pumping cavity and two kinds of models. Our vacuum packaging technology was developed in the early 1980s, while filling the vacuum packaging technology started in the early nineties. Vacuum packaging materials commonly used three-layer composite film or aluminum foil composite film made three sealed bags. Vacuum packing machines commonly used outside pumping cavity and two kinds of models. Our vacuum packaging technology was developed in the early 1980s, while filling the vacuum packaging technology started in the early nineties