NDVK certificate NDVK certificate
IFT certificate IFT certificate
ISO 9001 ISO 9001
P mark certificate P mark certificate
ISO 50001:2012 ISO 50001:2012


The quality mark DINplus, with its strict requirements, is an established quality mark for wood pellets with around 200 certificate holders world-wide. Traders and consumers of wood pellets trust in DINplus certification not only in Europe. Wherever there is a need for high quality wood pellets, this is the trusted certification. Therefore, producers of central heating boilers and furnaces like to emphasize how important it is to use only wood pellets with the quality mark DINplus, because by using DINplus certified wood pellets, boiler issues can be reduced. The DINplus quality mark creates customer confidence. They can rest assured that an independent, neutral, and dedicated institution has carefully investigated and reviewed all the certification criteria for wood pellets and wood pellets production. External monitoring ensures that the product quality is maintained during production. All of which provides customers with added value that will help them to decide which product to purchase. Wood pellets for use in small furnaces receive the quality mark DINplus, if they fulfil the requirements of European Standard DIN EN 14961-2 and others defined in the Certification Scheme of DIN CERTCO. It was the first certification body, which started with the certification of wood pellets in 2002. Since then it is has established itself as the leading certification body in this area.

NDVK certificate

NDVK is a control centre for window and door manufacturers verified by Norwegian government. It certifies tests and controls the production compliance with the requirements and standards set forth by the Norwegian institutions. In order to obtain the right to issue the production with the NDVK quality brand, the manufacturer is obliged to undergo a number of tests and certifications. After the acquirement of the NDVK certificate, the enterprise is subject to regular control of the production process, ensuring a constant production quality.


ENplus was first introduced in Germany in 2010 and since then, the certification enjoyed a rapid growth across Europe. The ownership of the ENplus trade mark remains with the European Biomass Associatiom AEBIOM. Certificate not only fulfills the EN 14961-2 provisions, but requires even stricter quality criteria. This quality seal stands for low emissions and trouble-free heating with high-energy value. For the first time the whole supply chain is covered by a single certification system. The ENplus quality seal accounts for the whole wood pellet supply chain – from production to delivery to the final customer, therefore ensuring high quality as well as transparency. In 2014 a total of 6,5 million tons of ENplus certified pellets has been produced. This represents around 60% of the total pellets consumed for heating in Europe.

IFT certificate

Certificate issued by Rosenheim (German) Institute for Window Technology, certifies the conformity of production and quality surveillance systems of window and door timber blanks to certain standards. Following the changes in these standards, the respective quality surveillance system is also updated. Quality control system and production auditing are performed twice a year. Taking into account the results of these audits, the extension and renewal of the certificate is considered, which is done every three years. Following the same principles the all-type panel production quality surveillance system is established in the company.


In 2018, SIA Staļi obtained a delivery chain certificate from the Programme for the Endorsement of Forest Certification (PEFC). This is a forest certification system evaluation programme that focuses on sustainable forest management. The control system ensures tracking of the flow of materials from suppliers, from basic logs to final products.


Certification Centre of the Latvian Academy of Sciences (LAS) was founded on 15 April 1994 by the decision of the Senate of the Latvian Academy of Sciences. Currently, Certification Centre of the Latvian Academy of Sciences is a state-authorized certification body operating in the regulated field of conformity assessment of building materials, and this includes the right to assess the conformity of building materials with the national quality and safety requirements. The Centre has acquired accreditation in this field in Latvia (LATAK). The Centre has been notified to the European Commission as a certification body of construction products and manufacturer’s production control with notification number 1327. This means that the certificates issued by the Centre are recognized in all EU Member States and they entitle to grant CE safety marking together with the Centre’s notification number to the certified products. Products with such marking can be freely placed on the market of any EU Member State.


Certificate issued by BM TRADA CERTFICATION certifies that the technology of thermal processing of wooden packing material and the process quality assurance conforms to the International Standards For Phytosanitary Measures No. 15 (ISPM 15) (directions regarding requirements for wooden packing materials in the international trade) and ensures thermal processing of wood in 56° C for 30 minutes. This certificate allows exporting products with wooden packing material to numerous countries, for example, USA, Canada, Great Britain, China etc. Wooden packing material standard introduced by these countries has changed the phytosanitary requirements.


The company has Chain of Custody certificate (license code FSC ® C109515), showing compliance to FSC ® Chain of custody standard. Our products, marked with FSC® label are made from materials, coming from ‘well-managed’ forests.

ISO 9001

ISO 9001 is the most universal and famous standard in the world. Compliance with this standard gives customers the peace of mind that the company consistently ensures the quality of its goods and services by maintaining a quality management system and undergoing inspections by independent auditors from time to time in order to certify the effectiveness of its quality systems.
The ISO 9001 Certificate provides evidence that "Staļi" Ltd consistently supplies high quality products and services and maintains professional and effective production standards, management procedures, and documentation. In compliance with this standard, "Staļi" Ltd focusses on successful and reliable communication with customers during the entire project development process. Efficient management procedures enable "Staļi" Ltd to deliver each order accurately and timely.

P mark certificate

A certificate from the Research Institutes of Sweden AB (RISE) confirms the conformity of window and door manufacturing to P-mark standards such as CR.022 and CR.020. As these standards change, quality management systems are adjusted and improved. Conformity audits are conducted twice a year, and products are regularly tested.

ISO 50001:2012

Сertificate ISO 50001:2012 confirms that "Staļi" Ltd takes care of creating and maintaining an internal energy management system (EnMS) in the company. In accordance with the standards of the Certificate, "Staļi" Ltd complies with all the guidelines for the use of energy resources and the requirements to them, established by the system, and the company operation is based on the principles of sustainable development.
As part of the energy management policy, the company will continuously improve and enhance its energy efficiency. The organization will be notified of the importance of the energy management system and assisted in training the personnel and in taking measures to improve the system, in identificating energy management goals and target energy indicators, as well as provided with available information and resources necessary to achieve these goals.
By analyzing energy consumption, you can save costs at all stages of production, while maximizing its efficiency.
Choosing "Staļi" Ltd, the customer chooses high quality products from the responsible manufacturer.