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Hidden-Rail System

The strength such as the fine quality of aluminum and durability has
remained while maximizing the insulation effect by using the heat
blocking insulation bar (polyamide)

It is the world's first terraced plane structure system that automatically
drains the rainwater in the window frame to the outside,
and one can experience the nation's best water-tightness performance
and beautiful design.
The fourfold air-permeability structure of the rail concealing system and TPV gasket, and the appliance of specially developed air-permeability components produces an excellent sealing and effectively blocks the air leakage and noise and creates a quiet and pleasant interior space.
It is strong against the typhoons with fierce winds since a forced breakaway of the rail covered door is
structurally impossible. It is safe since it is only removable from the inside and it is the nation's
only sliding product that can be applied to super high-rise apartments.
It is always clean since the dust, insects, and foreign substances are automatically cleaned
    when the rainwater is automatically drained to the outside.

The remaining sediments take one wiping to be cleaned!
The maintenance management is very easy since the corresponding part can be replaced
    when there is a damage of the window frame due to a shock or careless usage.

The product can be used semi-permanently and is also economical.
It is a pure domestic technology which can replace the imported system windows and doors to our
company's excellent product, and the huge waste of foreign currency can be also saved by the export of procedure (royalty).