About Weisswasser
Welcome to weisswasser
About Us
About Us Founded in 1995, Menred is a global manufacturing group focused on delivering integrated comfort solutions for buildings and homes. Our core expertise spans radiant heating & cooling, ventilation, water purification, and smart home systems. Guided by the mission “Innovation for Building Carbon Neutrality,” we develop products and platforms that prioritize energy efficiency, sustainability, and superior user experience. What we do We design and manufacture systems that move beyond individual products to holistic, user-centered solutions — from temperature control and whole-home air systems to advanced water treatment and intelligent home integration. Our approach emphasizes energy savings, engineering reliability, and scalable solutions for both residential and commercial projects. Research, standards and leadership Menred actively participates in national research projects and standards development, contributing to technical standards such as GB/T51350 and GB/T40438. We partner with leading research institutes and industry bodies to shape the technology roadmap for efficient, low-carbon buildings. Facilities and partnerships Our industrial footprint includes multiple R&D and manufacturing parks — including the Weißwasser park in Germany — and strategic cooperation with institutions such as the China Academy of Building Research and international technology partners. We collaborate with global brands and distributors to deliver high-quality, certified products to markets worldwide. Commitment to sustainability In response to global climate goals, Menred invests in technologies that support near-zero energy buildings and the transition to renewable systems — from photovoltaic and energy storage to efficient heat-pump solutions. Our development philosophy centers on integrating innovation, environmental stewardship, and practical implementation.
Integrated Manufacturing & Automation
- MES-driven dust-free assembly workshops
- EMERSON BRANSON plastic rotary welding
- TRUMPF CNC punching & laser cutting
- COSMO gas leakage detection




R&D Center Facilities
Physicochemical Lab
chemical composition and physical properties testing
Pressure & Burst Strength Lab
Pressure resistance and burst-strength testing
Structural Reliability Lab
Component stress and fatigue analysis
Aging Test Lab
Durability & lifecycle validation
Filtration Performance Lab
Flow-rate & retention efficiency tests
Environmental Simulation Lab
Constant temperature, constant humidity, andcorrosion resistance testing
Semi-Anechoic Noise Lab
Certified noise & vibration analysis
Packaging & Transportation Lab
Drop and transportation simulation testing
HONOR & QUALIFICATION
Our company constantly increases and updates the production equipment, improves the production process,
and uses advanced and reasonable testing equipment in the industry.
Our product quality has been strongly guaranteed. In addition to the perfect after-sales service,
the brand of Weisswasser has been recognized in the industry.







Global Partners & Collaborations





BRAND HISTORY
Menred is committed to home comfort system integration and green building technology
2021-2022 ○
2021
5+mg System Air Conditioner: Comfortable Home
AIO Supply System Air Conditioner Supports International Solar Decathlon
30+ Global Universities Compete on the Same Stage,and 15 New Energy Buildings Have Become New Landmarks
Cozy Classroom and Campus Fresh Air ventilator – MENRED Fresh Air Protection Guards 1721 Classrooms as One of the Top Ten Livelihood Projects in Wenzhou City in 2021
Menred Comfort System Co. and Menred Environmental Technology Co. Are on the List of “Specialized, Sophisticated, Unique, and Innovative” Enterprises in Zhejiang Province
Menred New Energy House Research Institute is established.
The cloud-based real-time monitoring software for HVAC systems is released.
Four Strategic Engines in 2021: National Team, New Retail, Comfort Design, and Consumer ProtectionQRCode.
2022
Mission Renewal: Innovation for Building Carbon Neutrality!
AIO system Air Conditioner: Five Constant Features – This system provides a comfortable environment of constant temperature, constant humidity, constant oxygen, constant clean and constant fresh air. ment of constant
Electrolux System Air Conditioner Experience Dongguan Center is Completed, and the Fourth Industrial Park which focus on heat pump is put into Operation, Establishing 5mg AC System (Guangdong) Co.
Innovative controller UI design: Green Hexagon redefined what’s the Comfort
Domestic Digital Platform for System Air Conditioners (HVAC) is launched
New Air Conditioning Systems Theory is released
Nine System Design Solutions for Ten Decathlon Key Technologies
2016-2020 ○
Complete the layout of three plants, two headquaters and one Group
Coedited National standard Nearly-zero energy building technology
EnOcean self-powered wireless international technology alliance member
KNX building control system international industry alliance member
The worldwide first 5-layer PE-Xa line was commissioned successfully, which was developed and made by iBA and iNOEX
German extruders technology, PE-RT II UV launched to market
2017 German Red Dot Design Award
Smart home system showed in international Passive house conference, Vienna
The 13th Five-year national technical task: Ultra-low energy building’s high efficiency ventilation and research heat recovery technology and products
Strategic cooperation with Electrolux AB
Three plants(heating,ventilation and water) won the National High-tech Enterprise
Polymer laboratory passed CNAS certification
Open the holidays Club for children of employees
Updated mission and vision
LJJ.com APP new retail platform launched
2020-2035-2050 National key Lab. of Future Architecture
2011-2015 ○
National High and New Technology Enterprise.
The brand of “MENRED” was registered in more than 100 countries and regions.
MENRED ecological construction demonstration projects that zhejiang enrecomfort system Co. ltd.foundation.
Joint investment in the LED business with Greentec from Switzerland
Passed ISO14000, the international environmental protection system authentication.
Established Chinese company with ELESTA building automation system from Germany.
Participated in editing national standard GB50189 Public construction energy-saving design.
Menred GmbH moved from Hamburg to wiswasser, Germany
Weiss Wasser Technology Division established
SI terminal strategy of thousand people and thousand stores plan launched
Menred technical training Park established in Jiaxing CITY
Participated in the compilation of “floor heating and temperature control – national standard” – GB31459-2015, officially released menred
Zhejiang Famous Trademark
Join China passive ultra low energy building alliance
Participate in the national project of the 12th Five Year Plan: Research on Key Technologies of high efficiency application of renewable energy for higher building energy efficiency
2006-2010 ○
Vice chairman of Radiant heating and cooling Committee of China Construction Metal Structure
A7…series brass forging standard adjusting manifolds developed successfully to enter China market
“3-way water mixing center” got the patent from National invention patent
Set-up Menred “Future home ” ventilation system and vacuums cleaner system divisions
Sponsored Sino-Japan and South Korea floor heating Industry Development Forum
National Comfort System Integration Training for distributors first station start in Nanjing
Held the first Under floor radiant heating technology seminar at National academic conference on HVAC&R
2001-2005 ○
Manufacturer of HVAC automatic controller products
MENRED(Shanghai)R&D Center Set-up
Cooperated with Vernet(France)
Since 1995 ○
Started as an AC and Security system integration service
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