NEMA’s shipment indexes for high intensity discharge (HID) lamps returned to positive growth territory during the first quarter of 2012, with each lamp type showing year-over-year gains following negative growth to close out the final quarter of 2011. Sodium vapor lamps increased 2.9 percent, while shipments of mercury vapor and metal halide HID lamps increased 5.0 and 0.1 percent, respectively.
Market shares varied slightly among the three lamp types. Sodium and mercury vapor lamps increased by 0.5 and 0.1 percentage points to 32.8 and 4.6 percent, respectively. Metal halide lamps posted a share of 62.5, a decline of 0.7 percentage points on a year-over-year basis.
NEMA is the association of electrical equipment and medical imaging manufacturers, founded in 1926 and headquartered in Arlington, Virginia. Its member companies manufacture a diverse set of products including power transmission and distribution equipment, lighting systems, factory automation and control systems, and medical diagnostic imaging systems. Worldwide annual sales of NEMA-scope products exceed $120 billion.
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