About Weisswasser

Committed to leading residential & commercial water purification technology, manufacturing, and solutions.

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

R&D Center Facilities

Analytical Lab

Physicochemical Lab

chemical composition and physical properties testing

Environmental Simulation Lab

Pressure & Burst Strength Lab

Pressure resistance and burst-strength testing

Structural Reliability Lab

Structural Reliability Lab

Component stress and fatigue analysis

Aging Test Lab

Aging Test Lab

Durability & lifecycle validation

Filtration Performance Lab

Filtration Performance Lab

Flow-rate & retention efficiency tests

Environmental Simulation Lab

Constant temperature, constant humidity, andcorrosion resistance testing

National Standard Semi-Anechoic Noise Lab

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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