... Anodizing,powders coating 4.Certification:ISO:9001 Aluminum Frame Used for Solar panelA).Features:(1).35*35 ... 35 suitable for 30-120w solar modules(3).50*35 suitable for 160-220w solar modules(4 ... such as: 25*35,30*35,46*40,50*35 etc, all the sizes according to customer ... installationn high brightness and hardness.4.Good suface frame,complete specifications,astacctive appearance and superior performance.5 ...