Lignin Sulfonate Concrete Dispersant from China
Lignin sulfonate concrete dispersant, a concentrated sodium-based lignin sulfonate acting as a high-range water reducer in ready-mix concrete, directly derived from black liquor of sulfite pulp mills. It is a residual lye from wood pulp, classifiable under tariff item 3804.00.00.
Duty Rate — China → Canada
0%
Import Tips
• Confirm the product is a lignin sulphonate and not a formulated concrete admixture
• Provide documentation of the sulfite pulping process
• Ensure the product does not contain tall oil