What Kunststoff-spranger Gmbh does

Kunststoff-Spranger GmbH is a privately held German plastics engineering company headquartered in Plauen (Saxony), founded in 1987, that designs, manufactures, and installs custom aquaculture and industrial plastic systems. Its core business is the design and construction of turnkey recirculating aquaculture systems (RAS) and supporting water-treatment components — drum filters (including the registered TinyDrum® sub-brand), moving-bed biofilters, denitrification reactors, self-cleaning larvae tanks, compact life-support filtration units, bioreactors, and PE/PP holding tanks — built to individual customer specifications at its single-site facility using CAD/CAM-supported manufacturing, with on-site assembly and commissioning performed by company technicians. The company also produces custom plastic containers and industrial equipment, and briefly extended into COVID-19-era infection-protection products.

Revenue is generated primarily through one-off project sales (turnkey RAS installations), supplemented by individual component sales, on-site installation professional services, and recurring repair/maintenance work; pricing is custom, undisclosed, and governed by standard AGB terms (2% skonto within 14 days, net 30). The company sells directly with no dealer network, supported by industry trade-show presence (Aquaculture Europe, fish international), Vimeo-hosted video content, and downloadable technical PDFs. Customer segments are organized by use case: research institutions and universities (primary — including Alfred-Wegener-Institut, Friedrich-Löffler-Institut, BOKU Vienna, Universität Hamburg), zoos and public aquariums (Sea Life/Merlin Entertainments, Zoo Zürich, Zoo Basel, Deutsches Meeresmuseum), commercial aquaculture operators (SwissShrimp, CrustaNova), industrial customers, and increasingly urban aquaponics ventures (REWE Green Farming, ECF Farmsystems, BIGH Farms). Projects span Germany, Switzerland, Singapore, Belgium, Austria, and Iceland.

The company is family-owned and managed by Andreas Spranger as sole Managing Director following a generational transition, with no disclosed institutional investors, funding rounds, or M&A activity. The 11–50-employee organization is highly specialized, with named department heads for containers/plant construction and large-aquariums/filters, multiple project managers, and an apprenticeship pipeline for plastics/rubber processing technicians.

Name

Kunststoff-spranger Gmbh

Legal name

Kunststoff-Spranger GmbH

Website

https://spranger-kunststoffe.de

Company type

Private

Founded year

1998

Operating status

Operating

Headcount range

11–50 employees

Short description

Kunststoff-Spranger GmbH is a Plauen, Germany-based family-owned plastics engineering firm that designs, manufactures, and installs custom turnkey recirculating aquaculture systems (RAS) and proprietary filtration components — including the TinyDrum® drum filter — for research institutions, zoos, public aquariums, and commercial aquaculture operators across Europe and selected international markets.

Ownership category

akta.pro rank

Product category

Industrial Plastic Manufacturing & Aquaculture Equipment

NAICS

Aquaculture (11251), Other Aquaculture (112519), Plastics Product Manufacturing (3261)

SIC

Miscellaneous Plastics Products (3080)

akta.pro primary industry

Recirculating Aquaculture Systems (RAS) & High-Density Farming Feed (AFADADAL)

akta.pro secondary industry

Water Treatment & Process Specialty Chemicals (IMAEABAN)

Keywords

• Plastic engineering
• Aquaculture systems
• Water treatment filters
• Custom plastic fabrication
• Industrial plastic components

Headquarters

HQ city

Plauen

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Operations, Technology or R&D

Revenue model

1. Custom Aquaculture Systems: Design, construction, and installation of complete turnkey aquaculture recirculating systems (RAS) for research facilities, commercial operations, and public institutions.
2. Individual Components: Sale of individual components including drum filters, fish tanks, biofilters, bioreactors, aquaria walls, and compact filtration units tailored to customer specifications.
3. On-site Assembly and Installation: On-site fabrication, assembly, and commissioning services performed by company technicians at customer locations.
4. Repair and Maintenance Services: Repair and maintenance work including spare parts, travel time, and service charges for existing installations.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels4 records

Core offering

Kunststoff-spranger GmbH designs, engineers, and manufactures custom plastic components, recirculating aquaculture systems (RAS), and mechanical drum filters (including the TinyDrum® product line) for water treatment. The firm serves industrial, research, zoological, and commercial aquaculture customers with tailored plastic-engineering solutions.

Product overview

Kunststoff-Spranger GmbH is a German manufacturer of customised plastic and steel systems for aquaculture, industry, and research. Its offering is a portfolio of interconnected hardware products and turnkey systems: the core product line is the TinyDrum® drum filter family (including the TinyDrum® brand), complemented by supporting filtration components such as Self-Cleaning Larvae Tanks, Denitrification Reactors, Bio Filters (Moving-Bed), and Compact Filtration Units. These are sold alongside or integrated into larger turnkey aquaculture systems including Small RAS, Aquaria Wall systems, and Bioreactors. The company also manufactures round tanks (PE/PP) and custom plastic containers for industrial applications, and briefly offered COVID-19-related products (disinfectant dispensers and infection protection walls). All products are designed, constructed (CAD/CAM), and manufactured in-house at the Plauen facility, with on-site assembly and commissioning.

Differentiator

Problem solved

Functional benefit

Products and services

• TinyDrum® drum filters
• Recirculating aquaculture systems (RAS)
• Custom plastic components & fabrications

Quantifiable outcome

• Over 20 years of experience in aquaculture system design

Named customers15 records

Segments4 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Three partnerships are on record, tiered notable and minor.

• Adisseo Asia PacificnotableStrategic or Co-development Partner · 13 December 2019Kunststoff-Spranger GmbH designed, produced, and installed a complete aquaculture research station for Adisseo at the Marine Aquaculture Centre on St. John's Island, Singapore. The facility supports feed development research for both shrimp and fish in fresh and saltwater conditions. Grand opening ceremony held December 13, 2019.
• Matís IcelandnotableStrategic or Co-development Partner · 1 January 2019Upgraded existing aquaculture research facility with additional recirculation systems shipped from Germany and integrated with the existing Matís facility. Company has had an ongoing relationship with Matís for multiple years.
• Life Sterlet Project (BOKU Vienna)minorStrategic or Co-development Partner · 1 January 2016Portable hatchery container for sturgeon breeding as part of the European Sturgeon-4-LIFE project. The hatchery can be operated in throughflow or recirculation mode and is located in Vienna.

Scale indicators2 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Hesy Aquaculture B.V. Dutch manufacturer of plastic tanks, drum filters, biofilters, and complete RAS systems for aquaculture. Highly comparable product portfolio and customer base to Kunststoff-Spranger, including the same plastic fabrication and filtration niche.
• AKVA Group: Norwegian publicly listed supplier of aquaculture technology, including RAS components, sensors, and fish-handling equipment. Direct competitor to Kunststoff-Spranger in the European aquaculture equipment market, with much larger scale and broader product portfolio.
• Sterner AS: Norwegian supplier of water treatment and life support systems for aquaculture, including fish farms, smolt facilities, and research centers. Comparable in offering integrated filtration, oxygenation, and control systems for RAS facilities.
• Billund Aquaculture: Danish engineering firm designing and building turnkey RAS for fish farming worldwide. Direct peer in custom RAS design, water treatment integration, and on-site commissioning for research and commercial aquaculture customers.
• AquaMaof Aquaculture Technologies: Israel-based specialist in recirculating aquaculture systems (RAS) for fish and shrimp, offering turnkey facility design and construction. Closely comparable business model to Spranger's full-scope RAS projects, including commercial shrimp facilities analogous to SwissShrimp and CrustaNova.
• MAT-KULING AS: Norwegian manufacturer of plastic tanks, pipe systems, and components for land-based aquaculture. Closely comparable in plastic fabrication, custom tank production, and aquaculture system component supply.

Broad incumbents

• Xylem Water Solutions: Large global water technology company with pumps, filtration, and treatment systems touching aquaculture and industrial water applications. Overlaps in water treatment equipment but operates at vastly larger scale across multiple industries.
• Pentair Aquatic Eco-Systems: Global broadline supplier of aquaculture and aquarium life support equipment, including filtration, UV, and water treatment. Larger incumbent with overlapping product categories (drum filters, biofilters, life support systems) but a much broader, catalog-driven business model.
• Röchling Group: Large German plastics manufacturer producing industrial tanks, piping, and engineered plastic components across chemicals, water, and industrial markets. Comparable in custom plastic fabrication capabilities for industrial applications but much larger and more diversified.
• Veolia Water Technologies: Global water treatment major offering filtration, biological treatment, and process systems across municipal and industrial customers. Adjacent in water treatment technology and engineering services for industrial facilities.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/kunststoff-spranger-gmbh

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Kunststoff-spranger Gmbh