1. Quartz tube: used in heat treatment furnaces such as annealing furnaces in the semiconductor manufacturing process. Quartz tubes can withstand high temperatures and have good chemical stability and will not react with semiconductor materials.

2. Quartz boat: Quartz boats are used to carry wafers during the heat treatment of semiconductor wafers. It also needs to be resistant to high temperatures and chemically stable to ensure the safety of wafers during high-temperature treatment.

3. Quartz crystal oscillator: Quartz crystal oscillator (crystal oscillator) is a very important frequency control component in electronic equipment and is widely used in semiconductor integrated circuits to provide accurate clock signals.

4. Quartz window glass: In semiconductor manufacturing, quartz glass is used to manufacture photomasks, window materials, etc. It has extremely high transparency and heat resistance and is suitable for precision processes such as photolithography.

5. Quartz sand: Quartz sand can be used as a raw material or auxiliary material in certain chemical processing steps in semiconductor manufacturing.

These applications of quartz are due to its excellent physical and chemical properties, such as high melting point, low thermal expansion coefficient, good electrical insulation and stability to many chemicals. These properties make quartz an indispensable material in the semiconductor industry.