... . 2.No welding, fast and easy installation. 6V solar panel rack Material: stainless steel,iron,aluminum.brass. zincMOQ500 pieceCapacity100000 ... Electronic parts,metal parts. .4).No welding, fast and easy installation zinc zinc5)Suit for any solar modules Color and size ... arc welding machine,punching machine,numerical control machine,centerless grinder;4)We have our own painting factory,we can provide ...