Asphalt Additives

High quality additives with very good track record.

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GMP+ certified additives

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Food Additives

Micronutrients, extracts, aminoacids and much more

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Polymers and Additives

Organic peroxides, plasticizers, resins, moulding compounds...

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All products

Asphalt Additives

Cosmetics, Cleaning & DEET


Food Additives

Organic Peroxides


Polymers and Additives

Silicones and Silanes


About us

Porta s.r.o. was established in 1994 and became one of important suppliers of speciality chemical additives, especially for chemical, pharma, cosmetic and food industry.

Porta represents many well-known producers, especially from European Union, USA, Japan, China and India.

We strive for the best possible technical and commercial service to our customers as well as long-term relationship with our partners and continuous natural growth of the company.

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Successful recertification

On August 12-13 2020, our company successfully passed the recertification audit ISO 9001: 2015 and GMP + B3.
The certificates were issued by Lloyd’s Register Quality Assurance for another 3 years.



Dear business partners, due to the COVID-19 situation in our country we started to work from the home offices as from 16th of March. Please note our access to the email and phones might be limited.


25 years of Porta

It has been already 25 years since Porta was founded by 4 friends. Many things changed but our main principals remained unchanged. We always strived for perfect product knowledge, preferred long-term relationships and proactively searched for solutions of non-standard requirements.

We feel fit after these 25 years and we are looking forward to another 25 years. That all also thanks to you, our valued business partners.

+420 241 091 211

Zelený pruh 99
140 02 Praha 4
Czech Republic