Certifications
The CE mark is a sign that must be affixed to certain types of products from the same manufacturer and with it the compliance with the essential requirements for the marketing and use in the European Union.

Quality
Over the last decade the increase in market amounted to 8% per year in respect of both Italian and foreign customers, which has been shown to favor the production Grein for the quality for their money.
All this was made possible thanks to the implementation of a series of stringent checks carried out during operation and the finished product that can reduce to less than 1% returns, highlighting reliability criteria uncommon.

