PENNSTOP series are flexible,colorful, special shape based on premium grade polyvinyl chloride (PVC) resin/ rubber and other mixtures, formed through the unique design and advanced extruding produce technology, takes excellent durability and corrosion resistance performance, widely used in various joints of construction structures for anti - seepage and anti leakage.
| Model |
Color |
Width |
Length |
Thickness |
| PENNSTOP WP |
Blue/Yellow or Customized |
10cm-60cm |
15m |
4mm |


· High tensile strength & Superior elongation capability
· Excellent inherent elasticity and impermeability
· Extremely alkalis, chlorinated water and other waterborne chemicals resistant
· Capable to taking care of any deflection or displacement arising caused by temperature changing or differential settlement of foundation.
· Supplied in coils for easy handling with high flexibility.
· Easy to install by tethering the outer flanges of the PVC waterstop to adjacent a reinforcing bars.

PENNSTOP is an outstanding waterproof sealing material, suitable for the construction of waterproof sealing joints in various construction scenarios, including tunnel sections, underground prefabricated components, as well as horizontal and vertical building structures. Its excellent adaptability enables it to easily meet the sealing requirements of different structures, providing reliable waterproof protection for various projects.
In terms of application scope, PENNSTOP is present in multiple fields: in swimming pools, it can seal concrete construction joints and expansion joints to prevent water leakage; in wastewater and sewage treatment projects, it can resist corrosive liquid erosion to ensure the tightness of the joints; in underground projects such as subways, tunnels, and culverts, it effectively blocks the infiltration of groundwater for construction joints, expansion joints, and cracks in the structure; in various buildings, it can also reliably handle the waterproofing and sealing issues of concrete joints.
Whether in complex underground environments or diverse ground buildings, PENNSTOP can precisely perform its functions, effectively achieving the waterproofing and sealing of concrete joints, and ensuring the safety and stability of the engineering structure.



Our factory boasts advanced production technology and equipment for top-tier R&D and quality control.
Key benefits include:
1. Advanced Technology: Utilizes leading international production methods to maintain highquality waterproof coils.
2. Product Diversity: Offers a range of waterproof membranes like PVC, HDPE, EPDM, TPO types for various projects.
3. Quality Management: Implements a rigorous system to monitor every stage from raw materials to finished products.
4. Highly Customization: Provides tailored solutions based on customer needs for specific waterproof coil specs.
5. Expert Team: Comprised of seasoned engineers and technicians dedicated to product improvement and customer satisfaction.
6. Global Reach: Our products serve construction projects globally.

PENNFOX Co., Ltd. is a professional manufacturer specializing in tunnel waterproofing materials, water-stopping materials and related accessories, we have been dedicated to becoming a reliable partner for global clients in the tunnel construction industry.
Firstly, to build a one-stop procurement platform for tunnel waterproofing materials and accessories. This platform integrates a full range of necessary products, allowing customers to complete all purchases in one place, greatly saving time and simplifying the procurement process.
Secondly, to provide professional tunnel waterproofing system solutions-we do not only supply products, but also combine our industry expertise to offer tailored solutions that address the specific waterproofing challenges of different tunnel projects.
A defining advantage of PENNFOX's products is their high customizability. We fully understand that every waterproofing project has unique requirements, which may stem from factors such as geological conditions of the tunnel site, project design standards, and specific functional needs of customers, therefore, we offer flexible customization services: based on customers' detailed requirements to develop and manufacture products that perfectly match their project demands, ensuring optimal waterproofing effects for each project.
In the future, PENNFOX Co., Ltd will strictly follow our slogan "Credit, Quality and Service create the bright future" and offer the best materials and service for customers.


1. Q: Are you trading company or manufacturer?
A: We are manufacturer.
2. Q: How long is your delivery time?
A: Generally it is 5-7 work days after deposit and depends on your quantity.
3. Q: Do you provide samples?
A: Yes, free sample is available. Before cooperation, delivery cost needs to be paid by customer, but it can be deducted in future orders.
4. Can You Make Our Design Or Put Our Logo On The Product?
A: Yes,We support OEM & ODM, your art work labels can be sticked on cargo packages.
5. Q:How do you ensure the quality?
A:We are working with there QC processes to guarantee the quality:
1) For raw materials;
2) Onsite inspection during production;
3) Final QC test for each batch of finished products.