@engineer,
Her "about me" suggests she had the resources in her office to sneer at her if she had asked that question:
CE Environment Technology Co., Ltd, founded 1998, mainly researches & developes, and produces ozone generator, which is widely used in industry, commerce, agriculture etc, with two production bases, located separately in Pingxiang and Guangzhou, where we have 2 ozone professionals, hardware processing, assembly workshop, fly back transformer and circuit board processing workshop and about 50 employees.