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Although the amount of water required is small, it is very critical and important. Adequate and appropriate lyrics are the main factors to ensure the whole seedlings of corn. Before the sowing, sufficient bottoms are required. If there is insufficient sensation, it should be timely watered and supplemented after sowing.
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Plano Concave Circular Cylindrical Lens
Plano Concave Circular Cylindrical Lens,Concave Cylindrical Lens,Cylindrical Lens Toric,Cylindrical Grin Lens
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