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3.2. Cơ hội phát triển kinh doanh cho các nhà phát triển ứng dụngBirch Bats: Birch is a newer material in the world of baseball bats, offering a balance between the flexibility of ash and the durability of maple. Birch bats are lighter than maple bats but still provide a solid, powerful hit. They are also less likely to break than maple, making them a good option for players looking for a durable yet powerful bat.Aluminum bats, while not allowed in professional baseball, are widely used in amateur and collegiate baseball. They are typically lighter than wooden bats, making them easier to swing for younger players or those with less strength. Additionally, aluminum bats are more durable, which reduces the need for frequent replacements.Aluminum bats are known for their