Revenue from our polysilicon business decreased 90% to $3.7 million for the three months ended March 29, 2014, as compared to $38.0 million for the three months ended March 30, 2013. This decrease for three months ended March 29, 2014 was driven primarily by revenue related to a hydrochlorination technology and equipment contract sold in the prior year quarter that did not recur in the three months ended March 29, 2014. For the three months ended March 30, 2013 polysilicon revenue was recognized primarily related to the shipment of equipment of a single customer. Polysilicon revenue may fluctuate significantly from period to period due to the timing of shipments and the length of time it takes to complete our obligations under the contracts.
Our sapphire business revenue during the three months ended March 29, 2014 is attributable to the sale of sapphire equipment and material. Sapphire material we sell is used mostly, we believe, in sapphire-based LED applications and other specialty markets. Revenue from our sapphire business was $5.6 million for the three months ended March 29, 2014, as compared to $15.5 million for the three months ended March 30, 2013. The primary driver of the decrease in the revenue was due to no ASF systems shipped during the three months ended March 29, 2014, whereas there were a limited number of ASF systems shipped during the corresponding period in the preceding year which resulted in revenue being recognized in such period.
AI
