• Material: PVC
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What are the symptoms of boron deficiency in fruit trees? How to treat? For fruit farmers, fertilization is very important. If not done well, it will lead to many symptoms and a significant drop in fruit quality.

Nutritional deficiency sym.......

The working principle of synchronous motor and induction motor:

Synchronous motors, like induction motors, are a common AC motor. The characteristic is: when the steady state is running, the relationship.......