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.
when you are writing, there's difference between traditional Chinese and simplified Chinese, traditional is used in HONG KONG and Taiwan, when you are speaking, there's lot of kinds accent, the most common two are Mandarin and Cantonese, Cantonese is used in Guangdong Province and Hong Kong.