What is the plastic grid of the click wood tiles made of?

Snap in Easy Click Locking Recycled Plastic Grid Base for Composite Wood Plastic WPC Deck Tiles - China Plastic Grid Base, Decking Base

simpa Black Pathway Gravel Grass Stabilisation Grid Tile - Set of 16

Do It Yourself Composite Deck Tiles, Australia

Outdoor Flooring Over Grass Or Dirt - Interlocking Tiles

Outdoor Flooring Over Grass Or Dirt - Interlocking Tiles

Upgrade your outdoor space with KUTA interlocking patio tiles made from solid natural acacia wood featuring a 12-slat design. These outdoor flooring

KUTA

Composite Decking Tiles

Check it Out: The StoneDeks System

Smart Tiles Peel & Stick Self-Adhesive Kitchen & Bathroom Wall Tiles, Hexago White

LVT - Luxury Vinyl Tile Flooring

Do It Yourself Composite Deck Tiles, Australia

Suspended Ceiling - Mineral Fiber, Ceilings

Snap in Easy Click Locking Recycled Plastic Grid Base for Composite Wood Plastic WPC Deck Tiles - China Plastic Grid Base, Decking Base

Schluter®-DITRA & DITRA-XL, Uncoupling (DITRA)