Three ranges - selection by application - damage-free installation with no window removal
Products of Zhongke Energy Consumption Control (Beijing) Technology Co., Ltd.: the ESEC one-way view-through energy-saving window curtain is the preferred solution for glass curtain wall heat insulation and exterior window shading. Its hole-free optical film delivers insulation without blocking the view and shading without dimming the light — for west-sun retrofits and envelope upgrades in offices, schools, hospitals, commercial complexes and residences.
Set against a blazing blue sky, the composite-film curtain — mounted on the interior side of the glass — is modeled on real photos: press and drag it up or down — lower it for shade and cooling, with the view still crystal clear.
Seen from indoors looking out: the curtain mounts on the interior side of the glass, rendered as composite film per reference photos; the background is a simulated scene (blue sky & blazing sun · CBD skyline, AI-generated), and this module is an interactive shading simulation.
Raising or lowering the screen switches the glazing system between two thermal states — heat rejection in summer, heat retention in winter. One screen, four seasons.
The high-reflectance film blocks 88% of solar radiation heat outdoors, keeping the view clear and the light soft and glare-free.
AC setpoint up about 3℃Raised, the glass regains its own heat-dissipation: heat built up during the day escapes quickly, so nights feel cooler.
Faster nighttime heat releaseSunshine and views stay unobstructed — passive solar gain warms the room naturally, cutting daytime heating.
Unobstructed daylight and solar gainLowered, the screen and glass form a near-sealed air cavity that blocks indoor heat from escaping — steadier room temperature, lower heating load.
Indoor temperature up about 2℃ in winterInsulation adjusts dynamically as the screen moves: K=1.9 deployed / K=2.3 retracted, W/(㎡·K) (K-value = thermal transmittance — lower is better), measured per GB/T 8484-2020 whole-window method (CABR, report BETC-T5CC-2025-00044, original at test reports page)。
