Chemical Safety Websites
chemicalprocessing.com
Information on a range of chemical engineering topics, from process engineering, manufacturing and automation strategies to fluid handling and pumps.
408,094 
$ 9,360.00
nea.gov.sg
Environment-related information such as weather, air quality (1-hr PM2.5 readings), dengue, hawker centres, recycling and others in Singapore.
101,655 $ 109,200.00