The synthesis of NMP is described in detail

Dichloromethane (DCM), also known as methylene chloride, toluene, xylene, white spirit, acetone, and ethyl acetate are examples of solvents that may be toxic. S...


A historical landmark that reminds you of old Hong Kong

Pawn ShopsPawnshops have a long history in Hong Kong. The industry s symbol - a coin with an inverted bat, symbolizing wealth and riches - is one of the city s ...