1. Clay: It should contain a certain amount of loose particles to facilitate the mixing of cement. A clay with a small amount of sand can be sanded in the soil. Clay with less sand and harder material, must be ground and then sanded.
2, cement: blended with 10% of 425 # ordinary Portland cement, can improve the strength and water resistance of the brick, no cracking after immersion. Otherwise, the bricks will crack.
3. Admixture: Incorporating a small amount of admixture (reinforcing agent), in addition to improving the induration strength of the brick, it can also reduce the amount of cement and reduce the cost of the product.
4. Water: The water consumption is appropriate and the strength of the brick is high. The molding water is less, the strength of the brick is poor, the material has large resistance in the mold, the pressure on one side is pressed, and the bottom surface of the brick is not dense; the molding water is much, the bottom surface is wet, and it is easy to be damaged when the mold is discharged. When the moisture content of the sand is 3 to 5%, the water consumption during molding is preferably 10%. If the raw material fine sand is too much, it will drop to 8%.
This model use Epi double chips led, full body aluminum, high power Grow Lamp works well for indoor plants.
we have 600w, 1000w, 1200w, 1500w, 2000w. Double switch Led Grow Lamp available.
600W(60pcs double chips led):
1000w(100pcs double chips led):
1200w(12pcs double chips):
1000w double switch grow light:
Led Grow,Indoor Grow Lights,Best Grow Lights,Grow Lamp, grow light, led grow light
Shenzhen Wenyi Lighting Technology Co., Ltd , https://www.szwygrow.com