... 1. 5 years warranty 2. Solar Keymark,SRCC,CE,ISO9001:2008 3. Anti-freezing 4.2% spare ... DescriptionThis mode of heat pipe solar collector is with CE, and Solar keymark certificates. It is of top ... pipes, and bracket.The material of manifold case is aluminum alloy. The shape is pentagon, so that it looks ... The bracket is also made of 1.5mm thickness aluminum alloy, and it is very strong. The bracket can ...