Experts in energy-efficient transparent building envelopes · ESEC insulating view-through shading window curtain
Zhongke Energy Consumption Control (Beijing) Technology Co., Ltd. (brand: ESEC) is headquartered at China Jin, Wangjing, Chaoyang District, Beijing, and specialises in energy efficiency for the transparent building envelope. Built around its self-developed ESEC insulating view-through shading window curtain, the company delivers retrofit solutions for existing glass curtain wall buildings — no structural change, no business interruption, no damage to interiors — serving offices, hospitals, hotels, data centres and industrial parks.
According to statistics from the Aluminum Door, Window and Curtain Wall Committee of the China Building Metal Structure Association, China has built more than 1.2 billion m²(industry research by Guanyan Tianxia puts the conservative estimate at 1.5–2.0 billion m²); among them, glass curtain walls built before 2005 account for about 50%; those built between 2005 and 2010 about 20% require energy retrofit. The existing curtain wall maintenance market has surpassed RMB 60 billion, with energy retrofit accounting for more than 40%.
Policy and standards point the same way. Under the MOHURD and SAWS Notice on Further Strengthening Safety Protection of Glass Curtain Walls (Jianbiao [2015] No. 38), maintenance of existing glass curtain walls followsan owner-responsibility system; a full safety inspection is required one year after completion acceptance, and a certified safety appraisal is mandatory once the design service life is reached. National standard GB/T 21086 sets the design service life of curtain walls at 25 years — meaning every curtain wall built before 2000 is now past its service life. GB/T 18091-2015 sets explicit limits on the reflectance of curtain wall glass, and GB 55016-2021 makes such requirements part of a mandatory code. Driven by expiring safety appraisals, substandard energy performance and urban-renewal funding, glass curtain wall energy retrofit has moved from an option to an obligation.
We follow a “measure first, retrofit later” approach: our in-house energy model delivers a quantified report before installation — annual electricity savings, cost savings, carbon reduction and payback period — so every investment in energy efficiency is clear and measurable.
Standard drafting · Product certification · Industry filing
| Category | Details |
|---|---|
| Standard drafting | Core drafter of the Technical Standard for Energy-Saving and Carbon-Reduction Retrofit of Existing Hospital Buildings |
| Standard drafting | Drafter of standards for energy efficiency of transparent building envelopes |
| Product certification | “Energy-Saving & Carbon-Reduction Demonstration Product” Recommendation Certificate issued by CEESTA (No. CHN7626G01130337BJ143, valid until 2027-03) |
| Industry filing | Filed with the energy conservation authority of MIIT |
ESEC insulating view-through shading window curtains, selected precisely by orientation, floor level and pain point
| Range | Model | Reflectance | Features | Applications |
|---|---|---|---|---|
| Huilang | ESEC 2.5 | 87% | Grey tone; solar shading, anti-glare and privacy in one | Commercial complexes, street-front shops, meeting rooms |
| Huineng | ESEC 10 | 91% | 97% near-infrared reflectance, strong heat insulation | West-facing offices, hospital ward blocks, hotels |
| Huiyuan | ESEC 100 | Radiative cooling * | Insulates by day and keeps cooling at night, radiating heat to space as mid-to-far infrared | Campus offices, exhibition halls, integrated roof-and-curtain-wall retrofits |
* The Huiyuan range cools around the clock through mid-to-far infrared radiation; detailed reflectance data is available in the product technical white paper. Design service life is about 15 years, and the view-through design keeps interiors daylit without artificial lighting.
Empowering a green future with cutting-edge technology
Redefine the light-environment standard for glass curtain wall buildings, so spaces are both efficient and comfortable.
Become the preferred supplier of light-and-energy-efficiency solutions for CBD office towers worldwide.
Guided by customer value creation and measured by customer satisfaction: integrity, openness, action, innovation, sustainability.
From Fortune 500 headquarters to finished offices — certified crews on every project
Several projects come with before-and-after measured data records taken under identical conditions. As some client details require authorization, anonymised case materials can be provided on request.
Measure first, retrofit later — a five-step loop that makes every energy investment accountable
Engineers measure curtain wall orientation, window-to-wall ratio and glass thermal parameters on site, then issue a professional assessment.
Using measured data and national standard weather data, we deliver a report covering annual electricity savings, cost savings, carbon reduction and payback period.
Product selection and installation plans are tailored to the facade and interior functional zones.
ESEC will keep deepening its work in transparent building envelope retrofit, pursuing a three-in-one path of technology innovation, standards leadership and quantified service. Together with building owners, designers and property partners, we will advance the green, low-carbon transition of existing buildings and contribute to China’s dual-carbon goals.
Hotline +86 186 1068 5811 (Mr. Guo) · esec001@zkesec.com
