亚洲AV秘 片一区二区三3,97久久久久精品美女高潮喷水,亚洲AV噜噜狠狠麻豆,激情婷婷久久综合一区

  • <var id="sr55d"><track id="sr55d"><ins id="sr55d"></ins></track></var>
    <b id="sr55d"><p id="sr55d"></p></b><source id="sr55d"><mark id="sr55d"></mark></source>
  • <tt id="sr55d"><tbody id="sr55d"><bdo id="sr55d"></bdo></tbody></tt>
    <b id="sr55d"><acronym id="sr55d"></acronym></b>
    1. <u id="sr55d"></u><samp id="sr55d"><td id="sr55d"></td></samp>
      <video id="sr55d"></video><u id="sr55d"><address id="sr55d"></address></u>
    2. Products
      • YG261 mask gas exchange pressure tester
        It is used to determine the pressure difference index of medical surgical masks under specified conditions.
      • YG812K Synthetic Blood Penetration Tester for Medical Masks
        It is used to determine the resistance of medical protective masks to penetration of synthetic blood under different test pressures. It can also be used to determine the blood penetration resistance of other coating materials.
      • YG815M type mask flame retardant performance tester
        It is used to test the burning performance of medical masks after being exposed to flame at a certain linear velocity. It is a special testing instrument for the flame retardant performance of medical masks.
      • YG571D Electric Rotary Rubbing Color Fastness Tester
        It is used to test the color fastness to dry and wet rubbing of fabrics, especially printed fabrics. It can provide 1133 grams of pressure to the rubbing head, rubbing clockwise for 1.125 revolutions or 2 revolutions an...
      • YT080-II Geosynthetics Hydrostatic Pressure Tester
        This machine is suitable for the air tightness test of the breathing valve of the self-priming filter anti-particle respirator, and is used in the medical equipment inspection institute, the protective mask manufacturer and other units.
      • YG469 mask bacterial filtration efficiency tester
        The Bacterial Filtration Efficiency (BFE) detector for masks is composed of an aerosol generation system, aerosol chamber and aerosol transmission device, negative pressure operating system, 28.3L/min sampler, etc. The ...
      • JG468-II automatic mask breathing resistance tester
        Textile air resistance tester, also known as fabric air resistance tester, is mainly used to measure the air penetration resistance of textiles and meltblown fabrics, cotton wool, space cotton, etc. It is used to identi...
      • JG226 Textile Airflow Resistance Tester
        Textile air resistance tester, also known as fabric air resistance tester, is mainly used to measure the air penetration resistance of textiles and meltblown fabrics, cotton wool, space cotton, etc. It is used to identi...