Fresh vegetable preservation and storage

The primary condition for storage and transportation of leeks is low temperature, and low temperature has obvious effects on inhibiting yellowing and rot. The ideal temperature condition is around 0°C. In order to prevent dehydration and wilting of leeks, plastic film packaging is required. Cryogenic plus plastic film sealed packaging can also inhibit the respiration of leeks and reduce nutrient loss. However, at higher temperatures, plastic film sealing packages sometimes suffer from gas damage, manifesting as dehydration in the tip of the leaves, causing odors. The way to prevent it is to avoid prolonged high temperatures, but also to make a few holes in the bag. According to the experiment, the fresh-keeping period of leeks wrapped in polyethylene plastic bags with holes (8 holes with a diameter of 7 mm) is about 3 days below 20°C, 10 days at 4 days to 5 days, and 0°C at 11 days-12. day. The fresh-keeping period of the non-porous 0.025 mm thick polyethylene bag sealed package is 4 days-5 days at 20°C, and 8°-9 days at 10°C. O°C is about 2 weeks. 0 °C low temperature plus plastic bag sealed packaging measures is the ideal conditions for short-term storage and transport of leeks. However, at present, the actual process from harvesting to consumption has not yet completed a perfect cold chain system. In particular, it is still difficult to achieve a low temperature of around 0°C during transportation and circulation. In this case, if it is a short-haul (6 hours - 12 hours) transport, it can be used to quickly pre-cool after harvest, and then use cold-car transport methods can also receive better results. China's winter long-distance transport of leeks from the south to the north via the railway. Commonly used soil insulation car ice method. First put the leeks in plastic bags and put them in bamboo baskets. Put some ice cubes in the center of the bamboo basket, between the plastic bag and the plastic bag. At the bottom of the Gao Bang Gondola, first lay a layer of ice about 33 cm thick. Place two layers of vegetable baskets on top and put a layer of ice on it. Two layers of quilts are hung on the inside of the car lining and overlapped at the top with a layer of quilts. In this way, it can be stored for 7-10 days before Spring Festival.

The Chest Seal is an advanced occlusive dressing designed to treat open chest wounds.  Penetrating injuries to the chest that result in open chest wounds may lead to tension pneumothorax, the second leading cause of preventable death on the battlefield.  Chest Seals are specifically designed with a medical grade hydrogel adhesive strong enough to adhere to skin that is exposed to blood, sweat, hair, sand or water.

Chest Seal is available in both a vented and non-vented version.  The vented version features a patent pending design with 4 vents that allow for one-way airflow out of the chest cavity during exhalation while preventing airflow into the chest cavity during inhalation.  The 4 vent design maximizes venting and ensures proper chest seal function in the event of an obstruction.


• FDA, CE Marking

• Used by Military, Police, Fire, EMS and First Responders

• Large 6  Inch Round Shape for Optimal Coverage Area

• Large Release Tab for Easy Application and Removal

• Effective in Extreme Cold and Heat

• Transparent Backing for Easy Placement Over the Wound

• Strong Medical Grade Hydrogel Adhesive

• Lightweight Puncture-Resistant Packaging

• Conforms and Adheres Easily to All Body Surfaces

• Function and Integrity of Chest Seal Preserved when Folded or Rolled

• Vacuum Sealed Pouch with 4 Tear Notches

• Latex Free

Non-Vented Chest Seal

Vented Chest Seal

Chest Seal

Chest Seal,Emergency Chest Seals,First Responders Chest Seal,First Aid Bag Ifak Chest Seal

Anping Longji Medical Equipment Factory ,