From Avalara LandedCost, by the LandedCost Research Team, updated June 1, 2017.
This page provides an overview of the basic import duty rates applied to goods that fall under the classification code 28399000 in Singapore. This product category is defined to include:
"Silicates & commercial alkali metal silicates excl of sodium"
Singapore is involved in a total of 3 trade agreements, and is associated with 1 country group.