The principle of modified atmosphere packaging (MAP) is to replace the air in the packaging bags and boxes with modified anti-corrosion gas (mixing 2 to 4 gases according to the nature of the food), thereby changing the internal environment of the packaged food, inhibiting the growth of bacteria, slowing down the metabolic rate and Extend the freshness or shelf life of food. The gas used is usually CO2, N2, O2 or various combinations thereof, and each gas has different effects on fresh meat preservation. Under refrigerated conditions (0 ℃), adding CO2 to saturation can greatly improve the shelf life of fresh meat, and at the same time prevent the oxidative discoloration of meat color due to low oxygen partial pressure. Pork can be preserved in this way for at least 100 days. If it can effectively prevent microbial contamination from slaughtering to packaging and storage, the storage period can reach 5 months. Therefore, pure CO2 modified atmosphere packaging is suitable for wholesale, long-distance transportation and sales methods that require a long shelf life. In order to make the meat bright red and popular with consumers, before retailing, it was replaced with oxygen-containing packaging, so that oxygen contacts the meat to form bright red oxymyoglobin, so as to attract consumers to buy.
Fresh Meat Map Trays,Active Modified Atmosphere Packaging,Map Food Container For Meat,Flush Food Packaging Map Tray Tipack Group , https://www.tipackgroup.com
The product name specification material steel factory/origin price (yuan/ton) is Φ6.5mm higher than that of last week than last week Pu line Φ6.5235 Q235 steel 5520 0 0 -110 Pu line Φ6.5mm Q235 JIS 5520 0 0 -110 High line Φ6 .5mm Q235 Pinggang 5840 0 -20 -110 High Line Φ6.5-8mm Q235 Beitai 5820 0 -40 -130 High Line Φ6.5-8mm Q335 Haixin 5830 0 -30 -130 Rebar Φ12mm HRB335 Baosteel 5540 0 0 70 Rebar Φ14mm HRB335 Baosteel 5540 0 0 70 Rebar Φ16mm HRB335 Baosteel 5330 0 0 -70 Rebar Φ18-25mm HRB335 Baosteel 5330 0 0 -70 Rebar Φ12-14mm HRB335 SB 5230 0 0 60 Rebar Φ18-25mm HRB335 Shanghai Bao 5150 0 0 60 Rebar Φ16-25mm HRB335 Tang Steel 5150 0 0 60 Rebar Φ16-25mm HRB335 2672 5260 0 0 10 Rebar Φ16-25mm HRB335 Handan Steel 5270 0 0 20 Rebar Φ16-25mm HRB335 Laiwu Steel 5270 0 0 20 Rebar Φ20-25mm HRB335 Beitai 5150 0 0 60 Rebar Φ20-25mm HRB335 Yinfeng 5150 0 0 60 Grade III Rebar Φ10mm HRB400 Baosteel 6100 0 0 -40 Grade III Rebar Φ12mm HRB400 Baosteel 5750 -50 -50 -40 Grade III Rebar Φ14mm HRB400 Baosteel 5750 -50 -50 -40 Grade III Rebar Φ16mm HRB400 Baosteel 5610 -50 - 50 -100 Grade III Rebar Φ20mm HRB400 Baosteel 5610 -50 -50 -100 Grade III Rebar Φ12-14mm HRB400 Masteel 5750 0 -20 -10 Grade III Rebar Φ16mm HRB400 Masteel 5550 0 -10 -30 Grade III Thread Steel Φ20mm HRB400 Masteel 5550 0 -10 -30 III Grade Rebar Φ25mm HRB400 Masteel 5620 0 -10 -180 Grade III Rebar Φ28-32mm HRB400 Masteel 5800 0 -20 -10 Hot Roll 1.5mm*1250*C ZJ330B Bead steel 6700 0 0 0 Hot rolled coil 1.5mm*1250*C SPHC 6700 0 0 0 Hot rolled coil 2.0mm*1250*C SPHC 6650 0 0 0 Hot rolled coil 2.0mm*1250*C SPHC One 6650 0 0 0 Hot rolled coil 2.75mm*1250*C SPHC Previous 6380 0 0 30 Hot rolled coil 2.75mm*1500*C Q235 Tangsteel 6100 0 0 50 Hot rolled coil 3.0mm*1500*C Q235 Tangang 6100 0 0 70 Hot rolled coil 3.0mm*1250*C Q235 Shagang 6100 0 0 70 Hot rolled coil 5.5*1500*C Q235 Saddle/base/tang/pack 5860 0 0 110 Hot rolled coil 7.5mm*1500*C Q235 Saddle/本/å”/包5860 0 0 110 Hot rolled coil 9.5mm*1500*C Q235 Saddle/Border/Don/Pack 5860 0 0 110 Hot rolled coil 11.5*1500*C Q235 Saddle/Bon/Don/Pack 5860 0 0 110 Cold rolled coil 0.4mm*1000*C SPCC-SD Baosteel Yichang 7850 0 0 -150 Cold rolled coil 0.5mm*1000*C SPCC-SD Baosteel Yichang 7700 0 0 -200 Cold rolled coil 0.6mm*1000*C SPCC-SD Baosteel Yichang 7800 0 0 0 Cold rolled coil 1.0mm*1250*C SPCC Masteel 7100 0 -20 -130 Cold rolled coil 2.0mm*1250*C SPCC Ma Steel 7060 0 -20 -120 Cold rolled coil 1.0mm*1250*C SPCC Handan Steel 7080 0 -20 -180 Cold rolled coil 1.0mm*1000*C SPCC Meigang 7050 0 -50 -150 Cold rolled coil 1.0mm* 1250*C SPCC Kunming Steel 7100 0 0 -100 Cold rolled coil 1.2mm*1250*C SPCC Cold weather 7050 0 -50 -150 Cold rolled coil 1.0mm*1250*C ST14 Angang 7700 0 0 50 Cold rolled coil 1.0mm* 1250*C DC04 Baosteel 8250 0 0 50 Cold rolled coil 1.0mm*1250*C SPCC Tangsteel 7020 0 -60 -180 Cold rolled coil 1.0mm*1250*C SPCC Handan Steel 7040 0 -40 -190 Cold rolled coil 1.0mm *1250*C SPCC Steel cladding 7040 0 -40 -190 Cold plate 1.0mm*1250*2500 DC01 Baosteel 7900 0 -50 -50 Cold plate 1.0mm*1250*2500 DC01/ST12 Wuhan Iron and Steel 7150 0 -70 -250 Cold plate 1.0 Mm*1250*2500 ST12 Angang Steel 1780 7230 0 -70 -170 Cold Plate 1.2mm*1250*2500 ST12 Angang Steel 1780 7180 0 -70 -170 Cold Plate 1.5mm*1250*2500 DC01/ST12 Ben Steel 7040 0 -90 -280 Cold plate 1.5mm*1250*2500 DC01 Baosteel 7850 0 -100 -100 Cold plate 1.5mm*1250*2500 SPCC Baosteel 7750 0 0 0 Cold plate 1.5mm*1250*2500 DC01/ST12 Wugang 7040 0 -80 -280 Cold plate 1.5mm*1250*2500 ST12 Angang Steel 1780 7100 0 -120 -250 Hot rolled strip 2.5mm*183*C Q195L Jianlong 5680 0 -70 -170 Hot rolled strip 2.5mm*204*C Q195L Jianlong 5680 0 -70 -170 Hot Rolled Strip 2.5mm*232*C Q195L Jianlong 5700 0 -50 -200 Hot Rolled Strip 2.5mm*160-204*C Q195-215 Tangshan Hongda 5700 0 -50 -200 Hot Rolled Strip 2.75mm*232*C Q195-215 Tangshan Guofeng 5700 0 -50 -200 Hot rolled strip 5.5mm*685*C Q235 Beitai 5740 0 0 -80 Hot rolled strip 5.6mm*700*C Q235 Beitai 5740 0 0 -80 Hot rolled strip steel 5.75mm*685*C Q235 Beitai 5740 0 0 -80 Hot rolled strip 6.0mm*690*C Q235 Beitai 5740 0 0 -80 Hot rolled strip 6.0mm*700*C Q235 Beitai 5740 0 0 -80 Hot Rolled Strip 5.5mm*685*C Q235 DeLong 5780 0 40 -70 Hot Rolled Strip 9.5mm*735*C Q235 DeLong 5780 0 40 -70 Hot Rolled Strip 1.8mm*355* C Q195-235 Tianjin rolling a 5850 0 -20 -200 hot-rolled strip 1.8mm*292*C Q195-235 Tianjin rolling a 5850 0 -20 -200 hot-rolled strip 2.0mm*295*C Q195-235 Tianjin rolling One 5820 0 -20 -180 Medium plate 6mm Q235 New steel 7450 0 0 50 Medium plate 8mm Q235 New steel 7250 0 0 50 Medium plate 10mm Q235 New steel 7150 0 0 100 Medium plate 12mm Q235 New steel 6700 0 0 50 Puzhong Board 14-20mm Q235 New Steel 6700 0 0 50 Puzhong Board 8mm Q345 Yingkou 7280 0 0 -120 Puzhong Board 10mm Q345 Yingkou 7080 0 0 -170 Puzhong Board 14-20mm Q345 Yingkou 6600 0 0 - 450 Puzhong Plate 10mm Q235 Masteel 7050 0 100 50 Puzhong Plate 14-20mm Q235 Masteel 6580 0 80 30 Puzhong Plate 14-20mm Q235 Chunye 6100 0 20 -120 Low Alloy Plate 6mm Q345 New Steel 7550 0 0 50 Low Alloy Plate 8mm Q345 New Steel 7400 0 0 50 Low Alloy Plate 10mm Q345 New Steel 7250 0 0 50 Low Alloy Plate 12mm Q345 New Steel 7050 0 0 150 Low Alloy Plate 14-20mm Q345 Yingkou 7050 0 0 170 Low Alloy Plate 14- 20mm Q345 Ma Steel 6950 0 0 100 Boiler Medium Plate 8mm 16MnG New Steel 7750 0 0 0 Boiler Medium Plate 10mm 16MnG New Steel 7550 0 0 0 Boiler Medium Plate 12-20mm 16MnG New Steel 7300 0 0 0 Boiler Medium Plate 8mm 20G Pu Steel 7700 0 0 -50 Boiler Medium Plate 10mm 20G Pu Steel 7500 0 0 -50 Boiler Medium Plate 12-20mm 20G Pu Steel 7300 0 0 0 Vessel Medium Plate 8mm 16MnR Pu Steel 7750 0 0 -50 Vessel Medium Plate 10mm 16MnR Pu Steel 7550 0 0 -50 Vessel plate 12mm 16MnR Pu steel 7300 0 0 -50 Vessel plate 16-20mm 16MnR Pu steel 7300 0 0 -50 Vessel plate 16-20mm 16MnR Nansteel 7500 0 0 100 Galvanized Volume 0.4mm*1000*C SGCC New Middle School 7830 0 0 -320 Galvanized Roll 0.5mm*1000*C SGCC New Medium 7680 0 0 -270 Galvanized Roll 1.0mm*1000*C SGCC New Senior 7400 0 0 -180 Galvanized coil 1.0mm*1000*C ST02Z Bengang 7480 0 0 -120 Galvanized coil 1.0mm*1000*C ST02Z Angang 7500 0 0 -150 Galvanized coil 1.0mm*1250*C JY150 Wuhan Steel 7480 0 0 - 120 galvanized coil 1.0mm*1250*C SGCC combined steel 7500 0 0 -100 galvanized coil 1.0mm*1000*C SGCC Huayu 7380 0 0 -220 coated roll 0.4mm*1000*C TST01 Baosteel 9450 0 0 -350 Color Coil 0.5mm*1000*C TST01 Baosteel 8900 0 0 -500 Color Coil 0.5mm*1200*C TST01 Baosteel 8900 0 0 -500 Color Coil 0.6mm*1000*C TST01 Baosteel 8900 0 0 -250 Color Coil 0.6mm*1200*C TST01 Baosteel 8900 0 0 -250 Color Coil 0.42mm*1000*C CGCC New Senior Middle School 8750 0 0 50 Color Coil 0.47mm*1000*C CGCC New Senior Middle School 8550 0 0 50 Color coated coil 0.5mm*1200*C TST01 Masteel 8600 0 0 100 Angle steel 50*50*5 Q235 Ma steel 5650 0 0 -100 Steel angle 100*100*10 Q235 Ma steel 5700 0 0 0 Channel 10# Q235 Ma steel 5780 0 0 -20 Channel 16#A Q235 Masteel 5630 0 0 0 Channel 20#A Q235 Masteel 5680 0 0 0 Channel 32#A Q235 Laiwu Steel 5900 0 0 0 I-beam 20#B Q 2 35 Wugang 5630 0 0 0 I-beam 25#B Q235 Laiwu Steel 5850 0 0 0 I-beam 36#B Q235 Laiwu Steel 5950 0 0 0 I-beam 40#B Q235 Laiwu Steel 6030 0 0 0 6 points for galvanized pipe *2.5 Q235 Jiangsu Guoqiang 7200 0 0 -90 Galvanized Pipe 1" *3.0 Q235 Jiangsu Guoqiang 7070 0 0 Galvanized Pipe 1.5" *3.25 Q235 Jinzhou 7180 0 0 -100 Galvanized Pipe 4" *3.75 Q235 Tangshan Huaying 6900 0 0 -100 galvanized pipe 6 inch *4.0 Q235 Wuhan Steel 6960 0 0 -100 galvanized pipe 8 inch *5.0 Q235 Youfa 7140 0 0 -100