久久九九久精品国产首页_欧美日韩在线不卡高清视频_国产精品网曝门在线观看_P2020国产精品久久精品

    <ol id="lu3ax"><tbody id="lu3ax"></tbody></ol>
      熱線電話:021-54370211?    

    DEET

    DEET (English diethylmethylbenzamide) referred to as "DEET, chemical name diethyl toluamide, avoid agent is a broad-spectrum insect flooding, for all kinds of environment variety of ding have ward off insects, can drive away flies, midge, black flies, chigger, deer flies, fleas, gnats, horse flies, mosquitoes, flies, small flying insects, stables flies and ticks.Deet was developed and patented by the U.S. department of agriculture during world war ii, and was designated by the U.S. military in 1946 to be used by the U.S. military.In the epa in 1957 as an insect ward off agent registration, began a civil, initially as a pesticide use on the farm, then the United States government to apply for the use in time of war, especially in Vietnam and southeast Asia, the United States environmental protection bureau statistics, every year, nearly 40% of americans use insect ward off agent containing deet, the world has a population of about 200 million, more than 40 years, more than 20000 research units of the research has proved that deet is currently on the market the most safe and effective broad spectrum displacement agent.The world health organization also recommends the use of repellent products containing deet to prevent vector insects.It is often mixed with other pesticides, but it is more toxic when mixed with carbamate.

    @ 2016 ShangHaiYaYu Biomedical co.,ltd TEL:021-54370211、54370255、54370355 FAX:021-54370255

    区。| 日土县| 资溪县| 文山县| 莱西市| 唐山市| 宁南县| 裕民县| 东丽区| 闸北区| 彭泽县| 镇远县| 大冶市| 南开区| 楚雄市| 朔州市| 陈巴尔虎旗| 巴青县| 肃北| 石渠县| 页游| 宁国市| 梁山县| 东安县| 洛南县| 临高县| 泸溪县| 屏东县| 通渭县| 改则县| 库尔勒市| 珠海市| 米泉市| 汶川县| 中阳县| 竹山县| 营口市| 彝良县| 新野县| 西充县| 海阳市|