CHANGSHA -- Fireworks made in China light up the sky during the opening ceremony of the 2012 London Olympics on Friday night.

"All the fireworks to be set off at the London Olympics are from China and three-fourths come from Liuyang city of Central China's Hunan province," said Ye Xinglong, chairman of the supplier Liuyang Apple Fireworks Artist Display Co Ltd.

The magnificent fireworks show at the Beijing Olympics resulted in more overseas demand for China-made fireworks, Ye said.

As one of the two suppliers to the London Olympics in Liuyang city, Ye's company exported fireworks for the opening ceremony with a value of 2 million yuan ($316,456).

The company's annual export volume has reached 100 million yuan, Ye said.

Fireworks produced in China are often used at international events. They were set off during the 2008 Beijing Olympics, 2006 Doha Asian Games and 2006 Turin Winter Olympics.