Repeated skin contact may result in absorption of harmful amounts. Inhalation: Brief exposure (minutes) is not likely to cause adverse effects. at 100 ppm; higher levels produce eye, nose, and throat irritation and are intolerable at 1000 ppm. Anesthetic effects are seen at or above 1000 ppm.
There are three types of Chinese in general: 1. Mandarin, written using short-form (Simplified Chinese) characters-Mainland China and Singapore 2. Mandarin, written using long-form (Traditional Chinese) characters-Taiwan 3. Cantonese, written using long-form characters-Hong Kong and overseas Chinese.
In many schools in Hong Kong, Macau and Guangdong, Cantonese is the medium of instruction, though the students are taught to read and write standard Chinese, which they read with Cantonese pronunciation. Cantonese is also the main language of business, the media and government in both Hong Kong and Macau.antonese has appeared in writing since the 17th century. It is used mainly in personal correspondence, diaries, comics, poetry, advertising, popular newspapers, magazines and to some extent in literature. There are two standard ways of written Cantonese: a formal version and a colloquial version.