Profile: Sigma Storage Systems is a manufacturer of pallet & mobile racks, cable trays, storage cabinets and mezzanine floorings. Our products include pigeon hole racks, customized multi tier racks, shelves slotted angle racks, skeleton racks, wall mount departmental racks and corner units. Our cantilever racks are widely used in sectors, store carpet rolls, metal extrusions, tube, pipe, steel bars and various industries.