JJG-1A Underwater Concrete Filling High Level Locator is approved by the expert group of Shanghai Science and Technology Commission.

  Shanghai Changji Geological Instrument Co., LTD. Since its establishment, Changji committed to new product research and development efforts, new technology, new material, new technology and the application of new devices.For twenty years, the company's products technical performance optimization and improve product quality steady, continuously provide high quality new products to market, to provide the qualified technical equipment for the country's economic construction.
  The JJG-1A Underwater Concrete Filling High Level Locator is best one product of them.Expert group review meeting organized by Shanghai Science and Technology Commission.

The leader(Left three)of Municipal Ccience and Technology Commission

Changji’s engineer Wang Rongbiao and Experters Evalutation Meeting

Technical Documents

Technical engineer show the instruments to assessment experts

Experts give a high praise to the research and development results

JJG-1A Patent for Invention