Dear Valued Customers,

Effective September 1st, 2025, LG Water Solutions will be introducing an updated inner shape for our 4-inch core tube.

This change reflects our ongoing efforts to enhance product usability and manufacturing efficiency. While the external appearance of the product remains unchanged, a hexagonal inner shape has been added alongside the existing circular shape. As a result, there are now two types of inner shapes available for the 4-inch core tube:

• Circular (existing)
• Hexagonal +Circular (new)

Please refer to the cross-sectional images for a detailed view of the updated inner shapes.

We would like to assure you that this change does not affect the performance, quality, or functionality of the product in any way. The membranes will continue to meet the high standards you expect from LG Water Solutions.

We appreciate your continued support and look forward to serving you with improved product solutions.