Adjust the thickness of buried soil and cold-proof materials. Some varieties that are not tolerant to low temperatures should be buried in the second cold soil before freezing. The thickness of buried soil is generally 15 cm. In order to achieve a better cold-proof effect, when buried in the second cold-proof soil, it can be covered with corn stalks or weeds and then buried. In this way, the soil temperature at the base of the grape roots can be significantly increased, which is conducive to safe wintering of the grapes.
Intravenous infusion bags are widely used in the primary packaging of drugs. Made from polyvinyl chloride (PVC), polypropylene (PP), polyethylene (PE), or polyolefin blend (PP+PE) for additional transparency combined with softness and good impact resistance
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