Heavy smoke rises at the scene of a fire in a plastic factory in Guayaquil, Ecuador, on March 19, 2013. About 500 firefighters tried to extinguish the fire of two plastic wineries in Guayaquil's industrial area. No casualties have been reported. (Xinhua/Str)

Firefighters work at the scene of a fire in a plastic factory in Guayaquil, Ecuador, on March 19, 2013. About 500 firefighters tried to extinguish the fire of two plastic wineries in Guayaquil's industrial area. No casualties have been reported. (Xinhua/Str)

Firefighters work at the scene of a fire in a plastic factory in Guayaquil, Ecuador, on March 19, 2013. About 500 firefighters tried to extinguish the fire of two plastic wineries in Guayaquil's industrial area. No casualties have been reported. (Xinhua/Str)

Firefighters work at the scene of a fire in a plastic factory in Guayaquil, Ecuador, on March 19, 2013. About 500 firefighters tried to extinguish the fire of two plastic wineries in Guayaquil's industrial area. No casualties have been reported. (Xinhua/Str)