Hong Kong SAR  ·  Green Building Technology  ·  零碳建筑科技

Building the
Zero Carbon Future

科技赋能低碳建筑  ·  开启健康美好未来

"夏天无需空调，冬天无需暖气 — 无潮湿无噪音，抗灾害好房子"

The international holding company for China's most certified ICF passive house system — backed by National Standard 23J908-8, China's highest building endorsement, and proven across four continents.

Explore Solutions View Case Studies
National Standard 23J908-8 Co-Author China Nuclear Energy Association — Five New Technologies 6,000,000 ㎡ Annual Production · 年产能600万㎡ Thermal Conductivity 0.033 W/m·K Italy · Mexico · Iran · China — International Projects 双碳目标 · 零碳建筑 European Production Equipment — DE / IT / AT / US R-30 to R-50 Wall Assembly Building Lifespan 500+ Years National Standard 23J908-8 Co-Author China Nuclear Energy Association — Five New Technologies 6,000,000 ㎡ Annual Production · 年产能600万㎡ Thermal Conductivity 0.033 W/m·K Italy · Mexico · Iran · China — International Projects 双碳目标 · 零碳建筑 European Production Equipment — DE / IT / AT / US R-30 to R-50 Wall Assembly Building Lifespan 500+ Years
6M+
㎡ Annual Production
年产能
¥12亿
Target Annual Revenue
年产值目标
20+
Active Patents
专利数量
500年
Building Lifespan
建筑使用寿命
4+
Continents Reached
国际项目洲数
About Us · 关于我们

China's Green Building Pioneer — Brought to the World

🇭🇰  Incorporated in Hong Kong SAR

Rensselaer Zero Carbon Technology Co., Limited is the Hong Kong-based international holding company and strategic arm for a joint venture with 格林堡绿色建设科技有限公司 (Greenburgh Green Construction Technology Co., Ltd.) — Shandong, China's most technically distinguished manufacturer of insulated permanent formwork (ICF) systems.

Founded in 2018 with a registered capital of ¥100 million and Phase 1 total investment of ¥638 million, Greenburgh broke Europe's blockade on green building manufacturing equipment — importing a complete production line from Germany, Italy, Austria, and the United States. This ended China's dependence on foreign imports for passive house thermal-break components, advancing China's green building capability by an estimated 40 years.

Our mandate spans cross-border trade facilitation, joint venture governance, international market development, and sustainable construction consulting — operating bilingual across Hong Kong, Beijing, and the United States.

Global ICF Market Outlook

The global ICF market, driven by energy codes, passive house mandates, and zero-carbon building targets, is in accelerated growth — with China leading Asia-Pacific at the fastest projected growth rate globally.

$3.5B
Global Market by 2035
7.7%
China CAGR 2025–2035
Greenburgh factory aerial view — 格林堡工厂鸟瞰
Greenburgh factory entrance — 格林堡工厂入口 Greenburgh production facility — 格林堡生产基地

格林堡绿色建设科技有限公司 · Jinan, Shandong, China · 320-acre production base

Products & Services · 产品与服务

Three Tiers. One Complete System.

From agricultural greenhouses and rural housing to luxury passive house villas — every building type, every climate, one integrated ICF system.

GLB-S Series
Standard
标准系列 · 农业 / 农村
¥85 – ¥135
per ㎡ · 每平方米
  • Agricultural greenhouses — wall thickness from 5–8m reduced to 25cm, recovering 33% farmland (118.8万亩 across Shandong)
  • Rural housing renovation — heating cost from ¥4,000 to ¥800/season (80% reduction)
  • Jiyang Quchidi greenhouse: strawberry yield +30%, day/night temperature variance only 5–8°C
  • No auxiliary heating needed: indoor 10.67°C when outdoor −12°C (Shandong Agricultural Science Academy verified)
  • Central Document No. 1 policy compliant — farmland protection requirement met
Policy-Aligned · 政策导向
GLB-P Series
Premium
商务系列 · 城镇 / 养老
¥160 – ¥220
per ㎡ · 每平方米
  • Urban residential and commercial buildings up to 27m (B1 fire rating)
  • Private elderly care communities — constant temperature 20°C+, allergen-free, ultra-quiet
  • Concrete reaches standard strength in 14 days; long-term strength 17% above standard
  • R-value 30–40 — significantly exceeds Chinese energy code requirements
  • No formwork removal needed — insulation and structure complete simultaneously
  • 50% concrete savings + 33% steel savings vs. traditional floor slabs
Best-Selling · 畅销产品
GLB-G Series
Grand
高端系列 · 被动房 / 别墅
¥260 – ¥380
per ㎡ · 每平方米
  • Certified passive house construction — PHI / PHIUS / Chinese GB standards
  • Luxury villas and high-end private residential estates
  • Building lifespan 500+ years — graphite EPS protects concrete from weathering permanently
  • Seismic resistance grade 9 (九度地震) — monolithic reinforced concrete structure
  • CCER carbon credit eligible — additional ongoing revenue stream for project owners
  • PHI energy certification adds 10–15% property premium value
Passive House Ready · 被动房认证
01
International Market Development
国际市场开发
End-to-end development of international distribution channels for Chinese-manufactured ICF and passive house building systems. We identify target markets, establish distributor networks, navigate import/export compliance, and support technical adoption by overseas architects and design institutes.
02
Joint Venture Governance
合资公司治理
Full holding company and JV governance — board representation, financial oversight, multi-currency treasury (HKD/CNY/USD), investor reporting, and compliance across Hong Kong and Chinese regulatory frameworks. Four-layer corporate structure protects all stakeholder interests.
03
Sustainable Development Advisory
可持续发展咨询
Strategic advisory for developers, investors, and government bodies seeking zero-carbon construction technology. Market entry analysis, regulatory navigation, carbon credit strategy (CCER), ROI modeling for passive house projects, and 50-year lifecycle cost analysis (葫芦套村 model: ¥20.51M savings over traditional).
04
Cross-Border Trade Facilitation
跨境贸易促进
Complete facilitation of product procurement, international logistics, customs documentation, quality inspection, and FX settlement between Chinese manufacturers and international buyers. Bilingual management across Beijing, Hong Kong, and the United States ensures seamless execution.
Core Technology · 核心技术

ICF Permanent Formwork — The "Sandwich" Revolution

The core principle: a revolutionary "sandwich" structure (EPS insulation — concrete — EPS insulation) permanently integrated. No thermal bridges. No formwork removal. No external insulation layer that can fall off or catch fire. One system delivers insulation, structure, formwork, and load-bearing simultaneously.

Insulation MaterialGraphite EPS (无烟毒石墨聚苯乙烯)
Thermal Conductivity0.033 W/m·K
Wall R-ValueR-30 to R-50
Heat Transfer CoefficientK ≤ 0.28 W/m²·K
Fire RatingB1 Class — S2 Smoke — t0 Toxicity
Heat Absorption Reduction99% vs. Traditional Roof
Concrete Strength Gain+17% Long-Term vs. Standard
Concrete Set Time14 Days to Standard Strength
Seismic ResistanceGrade 9 (九度地震)
Building Lifespan500+ Years
Production Equipment OriginGermany · Italy · Austria · USA
Annual Production Capacity6,000,000 ㎡
Certifications · 资质认证
01
国家建筑标准设计图集 23J908-8
China's highest-level national building standard atlas issued by MOHURD. The only passive house ICF specification at this level — structural engineers nationwide reference Greenburgh specifications by default when designing passive house projects.
02
核电工程建设五新技术 · 中国核能行业协会
"Five New Technologies" certification by China Nuclear Energy Industry Association (September 2023) — one of very few building materials companies to receive this prestigious endorsement.
03
住建部科技与产业化发展中心专家论证
Expert conclusion: "Compared to traditional structural systems, this system saves building materials, labor, shortens construction time, with significant overall benefits and high promotional value."
04
山东土木建筑学会标准 T/SDCEAS 10017-2022 & 30006-2022
Two Shandong Provincial technical standards co-authored by Greenburgh, plus T/CSTM national group standard co-authorship and Shandong Building Energy Conservation Science & Technology Award (Second Prize).
05
20+ Active Patents · 20余项专利
Utility patents, invention patents, and design patents covering permanent formwork floor slabs, connecting components, wall structure systems, and passive house thermal break innovations.
23J908-8 National Standard Atlas
国家建筑标准设计图集 23J908-8 · 被动式超低能耗建筑
China Nuclear Energy Association Certificate
核电工程建设五新技术成果证书 · 中国核能行业协会 2023
CCPIT Shandong Green Low Carbon Committee
中国国际商会山东商会绿色低碳建设发展专业委员会牵头单位
−80%
Heating Cost Reduction
100㎡ home: ¥4,000 → ¥800 per heating season. At −12°C outdoor, indoor stays 10.67°C with zero auxiliary heating (Shandong Agricultural Science Academy, Jan 2026).
−30%
Construction Cost
Gulutao Village (葫芦套村) 141-household: ¥43.98M (ICF) vs ¥64.50M (traditional) — ¥20.51M savings, eliminating gas pipeline and transformer upgrade costs.
33%
Agricultural Land Recovery
Wall thickness: 5–8m → 25cm. Shandong's 3.6 million acres of greenhouses can recover 1.188 million acres of farmland — equivalent to one entire medium county.
99%
Heat Absorption Reduction
Roof heat absorption reduced by 99% compared to traditional structures. HERS Index rating: "This Project" achieves near Zero Energy Home classification.
ICF wall installation process
免拆模剪力墙施工 — ICF shear wall installation: bind vertical rebar → install outer leaf formwork → bind horizontal rebar → install inner leaf formwork + supports → inspect → pour concrete. No formwork removal needed.
ICF floor slab installation
免拆模楼板施工 — ICF floor slab: install formwork panels → pour concrete → insulation completes simultaneously. No heavy lifting equipment needed. 50% concrete savings, 33% steel savings vs. traditional two-way slabs.
Company History · 发展历程

Eight Years of Technical Leadership

From a Shandong startup to China's most credentialed ICF manufacturer — a relentless pursuit of standards leadership, government endorsement, and international presence.

Core Tagline · 核心理念

"科技赋能低碳建筑，开启健康美好未来"

Technology empowers low-carbon construction, opening a healthy and beautiful future

2018
Foundation & European Equipment Import
Greenburgh founded in Jinan, Shandong. Registered capital ¥100M. Phase 1 investment ¥638M, with ¥350M dedicated to importing a complete integrated production line from Germany, Italy, Austria, and the USA — the first in China to do so. This breakthrough ended China's dependence on foreign imports for passive house thermal-break components (断桥构件).
Founded 创立¥638M InvestmentEuropean Equipment 进口设备320-Acre Base
2019–2020
First International Projects — Italy & Mexico
Completed landmark overseas projects: Italian government administration building, museum renovation (旧改), 21-story residential tower, and mountain hotel. Simultaneously delivered a university campus complex in Mexico. These projects validated GLB-G series performance against European passive house standards and established the company's international track record.
Italy 意大利Mexico 墨西哥Export 出口市场
2021
National Standard 23J908-8 Co-Authorship
Included as co-author of the Ministry of Housing's official National Building Standard Design Atlas 23J908-8 — China's definitive passive house construction reference, replacing the 16J908-8 edition. This is the company's most important regulatory milestone: no other ICF manufacturer in China holds this Ministry-level recognition simultaneously with nuclear industry certification.
23J908-8 国家图集MOHURD 住建部Passive House Standard
2022
Provincial Standards + Industry Awards
Co-authored two Shandong provincial standards: T/SDCEAS 10017-2022 and T/SDCEAS 30006-2022. Also co-authored T/CSTM national group standard. Won Shandong Province Building Energy Conservation Science & Technology Award (Second Prize). Appointed lead unit of CCPIT Shandong Province Chamber Green & Low-Carbon Development Committee.
Provincial StandardsEnergy Award 节能奖CCPIT Shandong
2023
Nuclear Association Certification + Iran Entry
Received China Nuclear Energy Industry Association "Five New Technologies" certification (September 5, 2023) — one of very few building materials companies to earn this honor. Completed Siemens factory project in Iran, extending the international footprint to the Middle East. Iran 7-story residential project also completed.
核能行业协会Iran 伊朗Siemens Project
2024–2025
Agricultural Market Breakthrough
Expanded into Shandong's 3.6-million-acre greenhouse market. Jiyang Quchidi project built August 2025: strawberry yield +30%, zero auxiliary heating needed. Shandong Agricultural Science Academy co-built demonstration greenhouse verified indoor 10.67°C at outdoor −12°C. Huludao Village (葫芦套村) 141-household rural renovation demonstrates ¥20.51M lifecycle cost savings over 50 years.
农业大棚省农科院共建乡村振兴一号文件
2026
Rensselaer ZCT — International HK Holding Established
Rensselaer Zero Carbon Technology Co., Limited incorporated in Hong Kong SAR as the international holding vehicle. Establishes professional governance, multi-currency financial infrastructure (Airwallex HKD/USD/CNY), and global capital market access — marking the beginning of Greenburgh's systematic international expansion under a Hong Kong-based strategic partnership structure.
Hong Kong HQ 香港International JVG&L Partnership
Case Studies · 工程案例

Proven Across Four Continents

Every project demonstrates a different dimension of ICF passive house performance — from European government landmarks to Chinese agricultural communities to Middle Eastern industrial facilities.

Italian Government Building
🇮🇹
Italy · 意大利 · Public Buildings
Government Administration Building
GLB-G series deployed for a government center meeting Italy's stringent energy codes. First overseas deployment validating European regulatory compatibility at institutional scale.
GLB-G SeriesGovernmentPassive House
Italian Mountain Hotel
🇮🇹
Italy · 意大利 · Hospitality
Alpine Mountain Hotel & Resort
High-altitude resort demonstrating GLB-G thermal performance in extreme cold climate conditions. The constant interior temperature and humidity control made the system ideal for premium hospitality.
GLB-G SeriesHospitalityExtreme Climate
Italian Museum Renovation
🇮🇹
Italy · 意大利 · Heritage Renovation
Museum Heritage Building Renovation
Historic building renovation using ICF for thermal envelope upgrade without compromising architectural integrity. Demonstrates the system's compatibility with existing structures and heritage conservation requirements.
GLB-G SeriesRenovation 旧改Heritage
Italy 21-Floor Residential
🇮🇹
Italy · 意大利 · High-Rise Residential
21-Story Residential Tower
Landmark high-rise validating ICF scalability at load-bearing heights previously untested with Chinese ICF systems in Europe. Structural performance at 21 floors confirmed full international applicability.
21 FloorsHigh-RiseGLB-G
Mexico University Campus
🇲🇽
Mexico · 墨西哥 · Education
Tecnológico de Monterrey University Campus
Multi-building university campus in hot-humid climate demonstrating GLB-P commercial-scale application in Latin America. First Latin American reference project establishing the system's tropical climate performance credentials.
GLB-P SeriesEducationTropical Climate
Iran Residential
🇮🇷
Iran · 伊朗 · Industrial + Residential
Siemens Factory & 7-Story Residential
Siemens industrial facility requiring precision temperature control — demonstrating ICF's applicability in high-spec industrial environments. Accompanying 7-story residential complex expanded Middle East market presence.
IndustrialSiemensMiddle East
Greenburgh China project construction
🇨🇳
Shandong & Tibet, China · 山东 / 西藏
Gulutao Village Renovation + Jiyang Greenhouse + Lhasa Guesthouse
Three landmark domestic projects demonstrating the full spectrum of Chinese market applications:

葫芦套村 141-Household Renovation (柳埠镇, 济南) — Full-village passive house renovation. 50-year lifecycle cost analysis: ¥43.98M (ICF) vs ¥64.50M (traditional) — saving ¥20.51M. Eliminates need for ¥7.2M natural gas pipeline network, ¥400K transformer upgrades, and periodic structural reinforcement costs.

济阳曲堤冬暖大棚 (Jiyang Quchidi Greenhouse) — Built July–August 2025. Strawberry yield +30%. Day/night temperature variance only 5–8°C. Zero auxiliary heating required in winter.

日喀则民宿 (Xigazê Guesthouse, Tibet) — Extreme altitude passive house application. Demonstrates performance in high-altitude, low-oxygen, extreme cold climates. Rural homestay renovation enabling commercial rural asset activation aligned with Central Policy guidance.
141 Households¥20.51M SavedAgriculture 农业Rural Revitalization 乡村振兴Tibet 西藏
Newsroom · 新闻中心

Industry News &
Company Updates

格林堡官方微信公众号

Follow for project updates · 微信号：gh_782a0085c43e
双碳
China Carbon Neutral 2060 · 3060目标
Industry · 行业动态
China's 2026 Central Document No.1 — ICF as the Farmland Recovery Solution
Beijing's 2026 Central No.1 Document mandates two hard targets: protect the 1.8 billion-acre farmland red line AND increase rural income. Traditional greenhouse walls occupy 5–8 meters — making them vulnerable to "excessive agricultural land use" violations under new enforcement. Greenburgh's ICF system reduces wall thickness from 5–8m to 25cm (96% reduction), recovering 33% of greenhouse land. Applied across Shandong's 3.6 million acres of greenhouses, this unlocks 1.188 million acres of new farmland — equivalent to one entire medium county — while simultaneously improving crop yields by 30%+.
February 2026Partner With Us →
Market Report · 市场报告
Global ICF Market Reaches $2B, Eyes $3.5B by 2035
Asia-Pacific leads growth at 7.3% CAGR with China at 7.7% — the fastest of any major market globally. Stricter energy codes, passive house certification expansion, and net-zero construction mandates driving demand.
May 2026Source →
Technology · 技术突破
Shandong Agricultural Science Academy Validates −12°C Performance
Provincial Agricultural Science Academy co-built demonstration greenhouse (completed December 2025): indoor temperature maintained above 7.82°C when outdoor reached −12°C, with zero auxiliary heating. Indoor/outdoor temperature differential exceeded 22°C overnight.
January 2026View Case →
Company News · 公司动态
Rensselaer ZCT Established in Hong Kong — International Expansion Begins
Rensselaer Zero Carbon Technology Co., Limited incorporated in Hong Kong SAR as the international holding platform. Multi-currency Airwallex account, business email shawn@rzerocarbon.com, and domain www.rzerocarbon.com now live.
May 2026Contact Us →

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Partners & Affiliates
格林堡绿色建设科技
G&L International LLC
住建部 · MOHURD
中国核能行业协会
山东土木建筑学会
中国国际商会山东商会
双碳目标 2060
Contact Us · 联系我们

Let's Build Something Lasting

Whether you are a developer, investor, design institute, government body, or construction firm — we welcome inquiries about distribution, joint venture, and partnership opportunities worldwide.

Email · 邮箱
shawn@rzerocarbon.com
Website · 网站
www.rzerocarbon.com
WeChat · 微信公众号
格林堡绿色建设科技有限公司
微信号：gh_782a0085c43e
HQ · 总部
Hong Kong Special Administrative Region
香港特别行政区
Operations · 运营
Beijing, China  ·  United States
中国北京  ·  美国
Company · 公司
Rensselaer Zero Carbon Technology Co., Limited
仁斯勒零碳科技有限公司