Solar keymark is the most widely accepted European standard for solar thermal collector. Testing for the certificate was completed by ITW and ISE in Germany
SRCC
The SRCC (Solar Rating and Certification Corporation) is the key solar collector certifying body for the US and Canada. The Sunflower solar collector has been tested in ITW lab and obtained SRCC certi
ISO9001:2008
ISO (International Organization for Standardization) is a network of standards institutes from 159 countries with a central office in Geneva, Switzerland, that coordinates the system. ISO is a non-gov