What ProStein does

ProStein GmbH & Co. KG is a German quarrying and aggregate-processing business headquartered in Bischofswerda, Saxony, operating 11 natural stone works, gravel excavations, sand pits, and landfills across the region. The company extracts and processes six distinct rock types — Gabbro, Granodiorit, Lamprophyr, Diabas, Granit, and Zweiglimmergranodiorit/Mikrogabbro — using stationary and semi-mobile crushing and screening equipment to produce EN-certified construction aggregates. Its product portfolio spans nine categories: frost protection and sub-base layers, aggregates for asphalt and concrete, hydraulic engineering stones, railway ballast, chippings, sands, fill materials, recycled construction materials, and specialty decorative products. Six active quarries (Ebersbach, Friedrichswalde, Kindisch, Melaune, Oberottendorf, Pließkowitz) supply road construction, asphalt/concrete, infrastructure, and landscape architecture customers, while five sites are in backfill/recultivation under the company's circular-economy program.

The business operates a sales-led, direct B2B model with no intermediary distribution: products are sold ex-works (ab Werk) at catalogue prices per tonne or unit, with dedicated inquiry and new-customer-registration forms. Delivery is organized through an in-house sales/logistics team that arranges multimodal transport via long-standing road hauliers, railway transport companies (Eisenbahnverkehrsunternehmen), and waterway partners. Quality assurance relies on third-party testing by TU Dresden's RAP Stra laboratory and in-house Eigenüberwachung with BHS Bau- und Handelsgruppe Sachsen. ProStein is a privately held GmbH & Co. KG and a subsidiary of the global building materials group CEMEX, with Marcel Busch serving as Managing Director (Geschäftsführer). Customers span Germany, Poland, and the Czech Republic, with specialty products (e.g., Schlesische Wegedecke, colored facing splits from Kindisch and Melaune) reaching broader European markets.

Name

ProStein

Legal name

ProStein GmbH & Co. KG

Website

https://prostein.de

Company type

Private

Founded year

1991

Operating status

Operating

Headcount range

51–100 employees

Short description

ProStein is a Saxony-based quarrying and aggregate-processing company operating 11 sites that produce EN-certified rock construction materials for road, rail, asphalt, concrete, and landscape customers across Germany, Poland, and the Czech Republic, operating as a CEMEX subsidiary under direct B2B ex-works sales.

Ownership category

akta.pro rank

Product category

Construction Aggregates

NAICS

Nonmetallic Mineral Mining and Quarrying (2123), Other Crushed and Broken Stone Mining and Quarrying (212319), Construction Sand and Gravel Mining (212321), Crushed and Broken Granite Mining and Quarrying (212313)

SIC

Mining & Quarrying Of Nonmetallic Minerals (No Fuels) (1400), Abrasive, Asbestos & Misc Nonmetallic Mineral Prods (3290)

akta.pro primary industry

Construction Aggregates Mining & Processing (Sand, Gravel, Crushed Stone) (IMADAAAI)

akta.pro secondary industries

Crushed Stone Quarrying & Processing (IMAKAHAA), Aggregate Processing & Value-Added Products (Washing, Screening, Asphalt/Concrete Aggregates) (IMAKAHAH), Construction & Demolition (C&D) Debris Transfer & Processing (EUAIABAB)

Keywords

• Construction aggregates
• Rock quarrying materials
• Road building supplies
• Railway ballast production
• Recycled construction materials

Headquarters

HQ city

Bischofswerda

HQ country

Germany

HQ region

Europe

Offices12 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Aggregate and Construction Material Sales: ProStein generates revenue through the extraction, processing, and sale of rock-based construction aggregates including road building materials, asphalt and concrete aggregates, frost protection layers, track ballast, water construction stones, specialty splits, sands, and landscape products. Products are sold per tonne or per unit directly to B2B customers. Pricing is available in a product catalog with net and gross prices per product.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels4 records

Core offering

ProStein extracts, processes, and recycles rock-based construction aggregates from 11 quarry and backfill sites in Saxony, Germany. The company produces certified road construction materials, asphalt and concrete aggregates, frost protection layers, railway ballast, water construction stones, specialty chippings, sands, and fill materials sold by the tonne to B2B construction customers. ProStein also accepts recyclable construction materials for circular economy backfill operations and coordinates multimodal delivery via road, rail, and waterway.

Product overview

ProStein GmbH & Co. KG is a construction materials supplier operating quarries and production facilities in Saxony, Germany. The company offers a portfolio of rock and aggregate products organized into nine main product categories: Frostschutz- und Schottertragschichten (frost protection and sub-base layers), Zuschlagstoffe (aggregates for asphalt and concrete), Wasserbausteine (hydraulic engineering stones), Gleisschotter (railway ballast), Splitte und Splittgemische (chippings and mixtures), Sande (fine sands), Auffüllmaterial (fill materials), Recyclingbaustoffe (recycled materials), and specialty products including decorative Wegedecke surfaces. Products are extracted from six active quarries (Ebersbach, Friedrichswalde, Kindisch, Melaune, Oberottendorf, Pließkowitz) producing different rock types (granodiorit, diabase, granite, gabbro) with varying colorations for specialty applications. The company also operates fill/deposit sites for accepting backfill materials in line with circular economy principles. ProStein is part of the CEMEX group and serves customers in road construction, civil engineering, concrete industry, and landscape architecture.

Differentiator

Problem solved

Functional benefit

Products and services

• Frost Protection and Sub-base Layers (Frostschutz- und Schottertragschichten)

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Nine partnerships are on record, tiered core and minor.

• CEMEX GroupcoreStrategic or Co-development PartnerProStein is a company of the CEMEX Group, one of the world's leading building materials companies. This ownership provides access to international standards, resources, and best practices in the construction materials industry. The affiliation enables ProStein to leverage global CEMEX expertise while maintaining regional market presence in Saxony.
• Steinbruch Oberottendorf GmbHcoreStrategic or Co-development PartnerA subsidiary of ProStein GmbH & Co. KG. Operates the Oberottendorf quarry acquired in 2014, which features high-quality rock material suitable for almost all certified construction aggregates. The site includes one of the most modern rail loading facilities in Germany.
• RAP Stra (TU Dresden)coreTechnology or IntegrationProStein's products are tested at prescribed intervals by RAP Stra, the road construction laboratory of TU Dresden, ensuring compliance with German and European construction standards.
• BHS Bau- und Handelsgruppe SachsencoreTechnology or IntegrationProStein conducts regular self-monitoring tests in cooperation with the laboratory of BHS Bau- und Handelsgruppe Sachsen, providing additional quality assurance alongside TU Dresden testing.
• Berufsgenossenschaft Rohstoffe und chemische Industrie (BG RCI)minorStrategic or Co-development PartnerProStein cooperates with BG RCI as part of its health and safety programme for employees, including occupational health initiatives and accident prevention.
• Eisenbahnverkehrsunternehmen (Railway Transport Companies)minorChannel Partner/ Reseller/ DistributorProStein works with various railway transport companies for nationwide and international rail transport of aggregates, enabling large-volume deliveries beyond road transport capacity.
• Road and Maritime Transport PartnersminorChannel Partner/ Reseller/ DistributorLong-standing reliable partners for road transport and maritime (waterway) transport of products, used individually or in combination with rail transport to organise delivery tailored to customer needs.
• Bistra Bau GmbH & Co. KGminorStrategic or Co-development PartnerBistra Bau GmbH & Co. KG operates residual gravel extraction and backfilling at the Bonnewitz quarry site, handling physical operations on behalf of ProStein.
• Eurovia Verkehrsbau Union GmbHminorStrategic or Co-development PartnerEurovia Verkehrsbau Union GmbH handles residual mine backfilling operations at the Wiesa quarry site on behalf of ProStein.

Scale indicators3 records

Recent moves7 records

Expansion highlights5 records

Broad incumbents

• Heidelberg Materials AG: Global German building materials major with extensive aggregates, cement, and ready-mix operations across Europe including Germany. Competes with ProStein for large infrastructure contracts and rail/waterway ballast; broader portfolio but overlapping core aggregate SKUs.
• Holcim Group / Holcim Deutschland: Global aggregates and cement group with German operations producing certified construction aggregates and concrete. Wider portfolio than ProStein but directly competes on the same EN-standard aggregate products and serves overlapping infrastructure customers.
• Vulcan Materials Company: Largest US producer of construction aggregates (crushed stone, sand, gravel, asphalt) with similar EN-equivalent product portfolio and direct-sale B2B distribution model. Comparable in operating model, though primarily North American footprint.
• Martin Marietta Materials: Major US aggregates producer with heritage quarry operations supplying road, rail, and concrete customers under tight specification regimes. Comparable in scale, certification-heavy product mix, and specialty aggregate strategy.
• CRH plc (incl. Heidelberg-based subsidiaries): International building materials group operating European aggregates and asphalt businesses including in Germany. Overlaps with ProStein on road construction aggregates, rail ballast, and recycled materials, though at much larger scale.

Direct peers

• Basalt-Actien-Gesellschaft (BAG): German quarrying and aggregates producer with multiple hard-rock sites producing crushed stone, railway ballast, and asphalt aggregates. Closest comparable German operator with similar EN-certified product portfolio, rail loading capability, and customer base in road and infrastructure construction.
• Mitteldeutsche Hartstein- und Asphaltwerke (MHKW): Regional hard-rock quarry and asphalt producer in central/eastern Germany producing certified construction aggregates for road and infrastructure markets. Overlaps with ProStein on geography (Saxony-adjacent), product range, and customer profile.
• Hartsteinwerke Schicker GmbH & Co. KG: Mid-sized German natural stone and aggregates producer operating quarries in Bavaria/Thuringia, supplying road construction, concrete, and railway ballast customers. Directly comparable in product mix, EN certifications, and regional B2B sales model.

Regional players

• Kutter Spezialbau GmbH & Co. KG: Mid-sized German road construction and asphalt group with own aggregate sourcing. Comparable regional German customer overlap and infrastructure-project delivery capability; primarily a customer-side competitor rather than a direct quarry peer.

Others

• Eurovia GmbH / Eurovia Verkehrsbau Union: Major German road construction contractor and aggregate producer (subsidiary of VINCI). Existing operational partner at ProStein's Wiesa site and a customer/competitor overlap on asphalt and road base aggregate supply.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/prostein-gmbh-co-kg

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries2 records

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 ProStein