1.Highquality material: our rockwool rock wool is made of highquality rock wool material, is spun into fibres, 40% higher water retention thanks to fibre structure, strong ability to absorb nutrient solution, from heavy metals. The rock wool cultivation is an inorganic sterile growth medium inorganic inert matrix, no toxic and harmful substances, green and environmentally friendly, easy to recycle. Rock wool with 0% chemical residues is ideal for organic herb cultivation. 2.Growth turbo: 90% germination success thanks to optimised pore size (0.52 mm). 20% faster rooting in cuttings vs. Standard products. Our rock wool is natural and environmentally friendly, has the properties of no root curling, no slow seedling stage, high survival rate, good seedling quality and strong stress resistance, etc. It can store a lot of oxygen and promote plant growth. 3.Professional handling: Cultivation cubes including 28 small precision cut rock wool cube 4 x 4 x 4 cm form a board, which can be used in aeroponic systems for good nutrient absorption. 4. production: you just need to put the nursery block in the seedling rock wool, and then add enough water. After a minute, they will absorb and expand with water, and then start working. The Rockwool Cubes can adapt to different sizes of culture pots and only need to be filled according to the gap without cutting, and are recyclable.