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Welcome to Sonderhoff (Suzhou) Sealing Systems

Sonderhoff started in China with a representative office in 2004. The business of Sonderhoff developed very well and the customers required having Sonderhoff excellent support also directly in China.

Therefore Sonderhoff founded 2009 in Suzhou the new entity Sonderhoff (Suzhou) Sealing Systems Co., Ltd. being responsible for the exclusive sales and distribution of all products of Sonderhoff in China and Taiwan.

In the following year Sonderhoff also started to offer the contract gasketing service to customers in the SIP (Singapore Industrial Park) and Jiangsu area with three dispensing machines. The contract manufacturing service for foam gasket, gluing and potting applications is also available for customers who have their own dispensing machines.

Sonderhoff Suzhou offers individual sampling of prototypes, as well as pilot application processes from small batches up to serial production.

In order to become more independent from exchange rates and import duties Sonderhoff decides to move into a new greater plant in SIP to be able to start the local polyurethane material production.

Sonderhoff Suzhou introduces SAP as the company ERP system and qualified the processes according to ISO9001 which was certified from TÜV Rheinland beginning of 2017.

The new material production from Sonderhoff in China and the new machines for expanding the contract manufacturing of Chinese customers’ parts is an investment in the future for the company’s further growth.

News, updates and exhibition dates

Innovations drive the market and are the decisive competitive advantage when it comes to pushing through. The Sonderhoff Group is constantly working on new materials and processes to make the process of sealing, gluing and potting more productive and cost-efficient for you.


Exhibition Team
Chinaplas 2018

Sonderhoff (Suzhou) Sealing Systems – the one-stop-shop.

Sonderhoff is a one-stop shop for the plastics and metal processing companies. They have the choice of more than 1,000 material formulations for various applications, for instance: electrical enclosures, electronics, automotive, air condition, filters, lighting, photovoltaic, packaging or household appliances.

They can rely on the corresponding dispensing systems from Sonderhoff for the automated application on industrial parts as well as its process know-how, multi-patented knowledge and more than 55 years of experience. In accordance with it, the Sonderhoff System combines chemical and technical competence with creative engineering know-how and a comprehensive service.

The four basic types of material:

The four different types of dispensing machines:

DM 402/403

DM 402/403

The DM 402/403 is a 2- or multi-component high-performance low pressure semi- or fullyautomatic mixing and dosing system for gasket, gluing and potting applications of different types of parts. The DM 402/403 precisely processes liquid, medium to high viscose media such as polyurethane, silicones, epoxy resins and other polymer reaction substances.



The SMART is a 2-component dispensing cell for semi- or fully-automatic use for gasketing, gluing and potting the widest range of parts. The system enables high-precision processing of liquid, medium and high viscosity polymers, such as polyurethane, silicone, epoxy resin or other polymer reactive substances. The dispensing cell is available in two sizes: SMART-M und SMART-L.

Dispensing cell 3E®

Dispensing cell 3E®

The new dispensing cell 3E® – Economic, Efficient, Ecological – is a 2-component low-pressure mixing and dispensing system for use in partly automated production for foam sealing, gluing and potting. The dispensing cell 3E® is designed as an entry-level model for standard uses and is economical even in small batch sizes. An immediate production start is possible. Set-up, plug in, produce!

DM 50 / 70

DM 50 / 70

The DM 50 and DM 70 are 1 or 2-component mixing and dispensing systems for use in manual production. The mixing of the materials to be used can be achieved through a static mixing head (MK 20) or a dynamic one (MK 50) All parts are housed on a moveable chassis. The DM 50 and DM 70 allow the manual application of different material by means of a hand applicator.

Job order production, the cunning alternative!

Using Sonderhoff Suzhou as your “extended workbench” has several advantages:

Customers who want to outsource sealing from their production chain, or who would like to take the first steps in using this technology together with us, have access to the entire group knowledge through Sonderhoff Services.

They have the opportunity to carry out test runs or new development without disrupting their own production. At the same time our company group ensures the integration of your developments and production processes with practical experience.

We offer you complementary production capacity, of your own production or personnel structures are insufficient to meet peaks of demand.

For if you unite experience, know-how, innovative power, dedication and team spirit into a homogeneous overall concept, the result is synergy you can talk about.

Local technical service and original spare parts for reliable performance

Quality that's worth it!

Continuous improvement process in quality, service and safety

Alongside Sonderhoff’s essential knowledge and decades of experience, a certified quality management system is for us the foundation stone of the high value job order production of your important parts and their qualified handling from delivery to supply.

Consistent quality management is the basis of our success. And we can prove it: with our ISO 9001 certificate of TÜV-tested quality, the visible manifestations of our insistence on quality.

The continuous improvement process in quality, service and safety is a part of our strategy to ensure continuous adherence to the highest standards. With this, we can assure you of the optimum quality of an important part of your product: its sealing, gluing or potting.

Your direct route to us is our way to you!

Naturally you can also come to us at any time. And we will also happily come to you...

Sonderhoff (Suzhou) Sealing Systems Co.Ltd.

1 Lansheng Road, Suzhou Industrial Park
215126 Suzhou  P.R. China

Tel  +86 512 8227 2800
Fax +86 512 8227 2799