Witherite Drilling Grade Additive from Japan
Natural witherite processed to a specific particle size for use as a weighting agent in oil well drilling fluids. This product is unchanged natural barium carbonate, meeting industry specifications, and falls under tariff item 2511.20.00.
Duty Rate — Japan → Canada
0%
Import Tips
• Ensure the product is not mixed with other drilling fluid additives, as that could reclassify it under Chapter 38
• Provide particle size distribution data to show it is only mechanically processed
• Confirm no chemical treatment has altered the mineral structure