The industry uses 98 per cent local raw material, and is adversely affected by low taxation, particularly for imported globes, he said.
Cheap imported warehoused glassware is flooding the local market.
"Our conversion capacity is over 200 tonnes per day, but we currently run at half our potential due to this problem, which is affecting our capacity to increase the workforce in line with the Governments jobs creation goal," he said.
The firm employs 400 people directly and supports other industries such as sand harvesting and soda ash and limestone production. It manufacturers glass tableware, globes and soft drinks bottles.
Previous attempts by the industry to have the Government take action had failed, Mr Githii said.