The noticeable particulate issue in this sort of smokes is most commonly composed of carbon (soot). Other particulates might be composed of drops of condensed tar, or sound particles of ash. The existence of metals from the gasoline yields particles of metal oxides. Particles of inorganic salts may be shaped, e.g. ammonium sulfate, ammonium nit

何偉華表示，減息有利風險資產包括股債，當中債市估值較股市為吸引。（視覺中國） 其他板塊方面，何偉華表示，明年為美國大選年，關注目前受政策支持的工業及醫療保健板塊。美國政府鼓勵製造業回流美國本土，相關投資正在上升中，而本身工業板塊估