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    • Please read the ingredients table carefully when selecting a toothpaste

    • Outline：

      Whitening toothpaste, anti-mite toothpaste... There are all kinds of toothpaste on the market, which is dazzling. When you buy, some eye-catching slogans are even more embarrassing. In fact, no m... more>>

    • mono-crystal growth furnace

    • Outline：

      The high-purity polycrystalline silicon raw material is placed in a high-purity quartz crucible and then melted by the high temperature generated by the graphite heater. Next, the molten silicon li... more>>

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