• 

  Portable Oxygen Gas Detector

  Negotiable

  Homepage:

  Liyang Henyu Machining Co. Ltd

• 

  Diesel smoke tester with digital display

  Negotiable

  Homepage:

  KEITI (Korea Environmental Industry & Technology Institute)

• 

  Gas Detector with IP54 Protection Grade, LCD Indicator and Semi-conductor

  Negotiable

  Homepage:

  Henan Hanwei Electronics Co. Ltd