Business Sale Information

For sale is a developed and in real sales tested business of compact automated concrete leveling and finishing equipment.

With five market-tested products and ready production, software and IP assets, this is a developed technology platform whose next stage is the scaling of international sales.
We welcome additional questions regarding the information below for pricing the transaction.

Main transaction thesis

1. Object of sale

Offered for sale is the business activity of the Estonian-registered company OÜ Puiga Soojus, which operates under the Concrete Wolf brand and develops and manufactures compact automated equipment for leveling and finishing concrete floors. The transaction transfers the entire business: developed products, technologies and software with source code, production documentation and equipment, current inventory if desired, supplier relationships, brands and other intellectual property, domains, web platforms and social media accounts, customer and distributor databases and all related know-how. The business activity can be continued at the current location with the current employees, moved to another country or duplicated into a new region.

If desired, the seller may also consider the partial transfer of the product group by individual developed devices. For example, it is possible to submit an offer solely for acquiring the Vibration Laser Screed development, together with the laser receiver technology. In such a case, the transfer of rights to the laser receiver is not exclusive: the right to use the technology and the right of further transfer also remain with the seller.

2. Market position

The weight of existing laser-guided leveling equipment starts at approx. 500 kg and goes up to several tonnes, and they cannot be used on most sites. The more compact equipment offered on the market does not use automatic laser-guided height control. The company’s equipment weighs 14–135 kilograms, fits through a standard door and works, among other things, on floors with reinforcement mesh and underfloor heating pipes — this means that they can be used on sites that make up the majority of the world’s construction sites and where the work is still carried out manually today.

To the seller’s knowledge, there is no direct functional analogue on the world market for the main products. Creating small and lightweight automated equipment proved during development to be a greater engineering challenge than building large machines, which is what the sector’s major manufacturers deal with; this circumstance is also the basis for the segment’s previous non-existence and the company’s first-mover position. The product group also covers both smaller and large concrete pouring surfaces, allowing both market segments to be served.

3. Company overview

Over six years, operating at Tartu Science Park, the company has developed a product family whose purpose is to automate concrete work on construction sites where the work is still predominantly carried out manually today: private houses, apartment buildings, basements, garages, hotels, hospitals, schools and other multi-storey buildings. The product group has passed user testing and market testing under real sales conditions.

4. Products

The product family includes seven products. Five products have passed development, user testing and market testing:

• Vibration Laser Screed 1300 and 1800 (lightweight laser screeds with automatic height control),
• Fast Concrete Leveling Machine (self-propelled universal leveling equipment).
  The model is easy to adapt to work with power‑tool batteries (the current version runs on 12V 38Ah AGM batteries).
• Precise Concrete Leveling Machine 1500 (precision leveling equipment with screw conveyor, with integrated vibrating screed) and Precise Concrete Leveling Machine 2000 with a two-metre working width.

The power trowels and the concrete topping spreader have been developed and are ready for market launch. Autonomous functionality for the power trowels is currently under development. During the testing phase, the sales platform was configured in a way that allowed us to analyze customer interest in different products; interest in power trowels was also widely confirmed.

• Remote Control Electric Power Trowel 2×60, with a pre-production model completed and all testing and validation phases passed; an additional version with autonomous functionality is currently under development. The model is a two-disc power trowel for processing spatial floor surfaces, operation of which does not require physical effort from the operator and which is easily transportable without the assistance of a crane or an additional machine. Lightweight, free of noise pollution and battery-powered. To our knowledge, the only two-disc power trowel that can be transported by human power.
• Lightweight and Powerful Power Trowel 2×120, which is more practical to bring to market only together with autonomous functionality.

A concrete floor topping spreader powered by power-tool batteries, which provides a 3 times faster and more efficient work result compared with conventional solutions:

• At least 3 times faster operation compared with conventional manual application;
• The ride-on design enables faster and more intensive material distribution compared with machines that require the operator to walk alongside or push them manually;
• No physical strain on the operator;
• Operates on commonly used power-tool batteries;
• The pre-production model is complete and all testing and validation phases have been passed.

CE declarations of conformity have been issued for the products that have passed market testing. The equipment works with standard rotary lasers, commonly used batteries and, for some models, commonly used power tool batteries.

5. Technology and intellectual property

The company’s core technological assets have been developed entirely in-house. These include, among other things, a laser receiver that is significantly faster than standard construction laser receivers and which, in the seller’s assessment, has independent application potential also in the products of other equipment manufacturers; a control system that maintains the set height in the event of temporary interruption of the laser signal; motor drivers integrated onto printed circuit boards; and control algorithms.

The Concrete Wolf trademark is internationally registered. Two utility model applications have been filed with the Estonian Patent Office in 2026, covering two main machine architectures and establishing priority dates; within twelve months of filing, it is possible to extend and prolong protection with international priority (PCT), and after that there are 30 months from the filing date of the Estonian utility model to file national patent applications. A third application concerning the laser receiver system has been prepared and is ready for filing; it has intentionally not been filed because registration results in the disclosure of technical solutions, and the timing and geography of filing will be decided by the acquirer. Software and know-how are protected by copyright and as trade secrets. Application numbers and documents will be disclosed under an NDA.

6. Market testing results

For the first product group, pricing as well as user and market testing through real sales have been completed. Market testing through real sales began in September 2025, with sales to Europe, Asia and Australia, followed by the USA and Canada from May 2026. Different strategies were also used to test the suitability of the pricing. During the test period, the company’s web platforms concretewolf.eu and concretewolf.us (the latter during a four-month period) were visited by more than 103,000 users in total, generating more than 10,000 price inquiries, more than 1,200 substantive sales correspondences and several dozen distributor applications from around the world. Orders with a total sales value of approximately €250,000 were fulfilled, with an average markup on product cost of 200–300%, corresponding to an approximately 67–75% gross margin before sales and general expenses. During the testing phase, the sales platform was configured to analyze customer interest in different products, and interest in power trowels was also widely confirmed.

Cooperation has been started with a dealer operating in the United Kingdom and Irish markets. The first repeat orders, such as additional machines being ordered by a large company, have been received.

The stated results were achieved with a minimal budget through online advertising, without a sales organization, participation in trade fairs and telephone sales — the purpose of testing was to confirm demand, pricing and the global delivery model before full-scale market launch. The databases and correspondence are documented and will be transferred with the transaction.

7. Production and organization

The equipment is assembled in Tartu. The production model is intentionally lightweight: printed circuit boards are manufactured to order, components are sourced from documented suppliers, and final assembly does not require heavy or complex equipment. For export, a DHL Express business account is used together with developed packaging and logistics solutions, enabling deliveries to more than 240 countries. Assembly training lasts a few weeks and the process can be documented for transfer; production can therefore be continued at the current location, relocated or duplicated. Key employees are ready to support the handover and the transfer of knowledge and work processes during an agreed transition period. The company has no financial obligations, encumbrances or ongoing disputes.

8. Development directions

The seller is essentially a development organization; the full-scale market launch and the building of the sales and distribution network have deliberately been left for the acquirer to carry out. In management’s assessment, the main unrealized directions are cooperation with construction equipment rental companies, activation of received reseller applications, the United States and the Indian and Arab markets (the local US sales platform was opened a few months before the preparation of this document), OEM cooperation with equipment manufacturers and marketing the laser receiver as an independent component.

9. Transaction process

Interested parties are requested to contact margus@concretewolf.eu. If necessary, a confidentiality agreement and a sales memorandum will be prepared with potential interested parties, after which intellectual property documents together with technical documentation will be provided as required. The seller is open to parallel negotiations and different transaction structures, including the acquisition of individual developed devices. Additional information about the products and the company is available on the website concretewolf.eu.

Appendix 1. List of assets to be transferred with the transaction

The following list specifies the composition of the object of sale described in section 1. The list is informative; the final composition of the assets will be fixed in the transaction documents.

Products and technologies

• Products that have passed market testing: Vibration Laser Screed 1300 and 1800, Fast Concrete Leveling Machine, Precise Concrete Leveling Machine 1500 (with vibrating screed), Precise Concrete Leveling Machine 2000 (2 m working width)
• Ready for market launch: Remote Control Electric Power Trowel 2×60, Lightweight and Powerful Power Trowel 2×120, Concrete Topping Spreader, and modifications such as different machine sizes.
• Unique fast-reacting laser receiver — also has value as an independent product in other fields
• Height-holding technology when the laser signal is lost (~5 s / ~1 m)
• Unique software and its source codes for controlling both the machines and BLDC motors, production drawings, CAD models, printed circuit board production files and schematics, CE certificates.

Marketing and sales

• Information and sales platforms concretewolf.eu and concretewolf.us, which also function as online stores (EU + Global and US + Canada)
• Additional platforms and domains: concretewolf.de, concretewolf.in, concretewolf.net, trowelpower.com, screedlaser.com
• Geographic location-based sales routing system that displays direct sales by region or directs the customer to a local reseller
• Analytics technology, significantly more capable tracking of interest and purchases than, for example, with Google Analytics
• Social media and YouTube channels and accounts
• Customer base (documented): 10000+ customer inquiries and contacts, 1200+ substantive sales email correspondences
• Several dozen dealer applications from all regions of the world; a reseller in the United Kingdom and Ireland region, with whom cooperation can be continued if desired.

Production

• Production documentation and equipment
• Established supply chain: printed circuit board partner, custom motor specification, component supplier accounts.
• Production capability at Tartu Science Park — can be continued with the same employees
• Creation of production capability at any location: process teachable via the internet, assembly training: a few weeks
• If necessary, training of new employees with the seller’s support (period by agreement)
• Packaging and logistics solutions; DHL Express business account
• Optional: current inventory (approx. €150,000 at sales price)

This document has been prepared for informational purposes and does not constitute a binding offer. The information presented is based on the seller’s accounting and operating data as of the date of preparation of the document.