1.      It is manufactured by choosing special qualified porcelain enamel steel plate and integrated stretching one time molding process and no wire automatic plasma welding. Meanwhile by taking technology from Germany.

2.      It melts special silicon compound after baking at 900 celsius degree and inner flask steel wall and forms special Blue-Gold Titanium Steel inner vessel. It features no corrosion, no leakage and no shrunken by pumping, no broken by pressuring forever.

3.      It is unique special inner flask in China. Particularly it is suitable for salina, seawater, and deep well at different region. Its operation life will be over 15 years.