Water Storage Tank:●Water Storage Tank use for different kinds of irrigation and domestic water like irrigation in greenhouse, rainwater recycling, etc.●The advantages :1.High quality. Approved by KIWA certification2.EXPEX FPP lining.?3.Poly-type coverage. For example: Steel Coverage, Type Stretch-draw Prevention Algae Coverage, Type Floating Algae Coverage, etc.?Quality Manage System Certificate Since 2009? ? ? ?? ? ? ? ?? ? ? ? ? http://www.kingpengintl.com/microclimate-control-system/irrigation-system/water-storage-tank.html