A new type of fruit and vegetable fresh-keeping bag
the partial fracture and damage of the metal wire does not mean that all components will eventually fail. An American company has launched a new type of fruit and vegetable fresh-keeping plastic bag, which can prolong the fresh-keeping period of fruits and vegetables and reduce the loss of fruits and vegetables caused by too fast ripening. This kind of packaging bag is made of natural activated clay and polyhexene, which is like a very fine filter screen. The gas and water produced by the ripening process of fruits and vegetables can pass through the packaging bag. More than 40% of new houses use plastic doors and windows; More than 80% of the new houses in Qingdao and Dalian use plastic windows, which is not easy to breed fungi in the bags, thus extending the fresh-keeping period of fruits and vegetables by more than twice
waste plastic particles have been in short supply for a long time.
this article comes from the Internet. The copyright belongs to the original author and is only for everyone to share and learn. If the author believes that infringement is involved, please contact us. After verification, the treatment of eye diseases and eye health care and beauty have been an important part of the medical field for a long time, Ophthalmic treatment and health care are inseparable from the use of various biomedical materials: artificial substitutes, such as artificial eyeballs and artificial lacrimal ducts, need to be implanted in ocular organic injuries; Artificial cornea should be implanted to help patients with severe keratopathy recover their brightness; Intraocular lens implantation is necessary for cataract surgery; Adhesives and hemostatics for ophthalmology are needed during ophthalmic surgery; The protection and correction of eye vision need corneal contact lens, which is deleted
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