疯狂撞击美妇雪白的大肉臀,午夜精品久久久久久久久,色噜噜综合亚洲AV中文无码,久久婷婷五月综合色精品

  • MODEL 2000 Five-parameter water quality online automatic monitor

    MODEL 2000 five-parameter water quality online automatic monitor adopts imported sensor probes, which have fast response speed, convenient operation, good accuracy and reliability. It can automatically monitor temperature, pH, conductivity, etc. in various water bodies unattended for a long time. Turbidity and dissolved oxygen. At the same time, the MODEL 2000 five-parameter water quality online automatic monitor has an instrument suitability test report issued by the Environmental Monitoring Instrument Quality Supervision and Inspection Center and a CCEP certificate issued by the Central Environmental Protection Association Certification Center.

    View product details
  • MODEL 9870 Water quality automatic sampler

    The water quality automatic sampler uses a peristaltic pump to empty the water sample in the sampling bottle, and then collects quantitative water samples into the designated sampling bottle through the water sample collection device and seals it, thereby completing the automatic collection of water samples. The instrument can be controlled by an on-site industrial computer to achieve automatic sample retention, automatic emptying of water samples, and automatic bottle sealing. It is an essential component of the automatic water quality monitoring system and has an instrument suitability test report issued by the Environmental Monitoring Instrument Quality Supervision and Inspection Center and a CCEP certificate issued by the China Environmental Protection Association Certification Center.

    View product details
安乡县| 友谊县| 荔波县| 桃源县| 胶州市| 华阴市| 北海市| 牙克石市| 开江县| 冀州市|