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Subject: Ordering a product

Dear Mr. Nguyen,

I hope this message finds you well.

My name is Sarah Johnson, and I am writing to place an order based on the catalogue you kindly provided.

Order details:

500 U-bolts, Part No. 58969, at $0.50 each

200 S-hooks, Part No. 57857, at $0.20 each

Delivery instructions:
Please deliver the above items by October 20 to the following address:

SHD Company
89 Southern Road
Manchester, UK

Payment method:
Payment will be made in cash on delivery.

Thank you for your assistance. I would appreciate it if you could confirm this order at your earliest convenience. Should you need any further information, please do not hesitate to contact me.

Sincerely,
Sarah Johnson

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One electronic device that I like and use most is my laptop. It is from the brand Dell. The screen size is about 15 inches, and the weight is around 2 kilograms, so I can carry it easily. It uses about 65 watts of power when charging. The shape is rectangle, thin and flat, which makes it look modern. The color is silver with a black keyboard. The body is made of metal and plastic, so it feels strong and durable. I use this laptop every day for studying, programming, and watching movies, and it is very useful in my life.

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The equipment is a Panasonic air conditioner, model CU/CS-U9SKH-8. It is small, white, and made of aluminum. The air conditioner has four buttons. Button 1 is used to turn the air conditioner on and off. Button 2 turns down the temperature, while Button 3 turns it up. Button 4 opens the menu to choose the desired temperature.

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My favorite electronic device is my laptop. I use it mainly for studying, programming, and watching videos. This device consists of several basic components. First, the CPU (Central Processing Unit) processes all the instructions and runs programs. Second, the RAM (Random Access Memory) temporarily stores data so that the laptop can work quickly. Third, the hard drive or SSD stores all my files and software permanently. Fourth, the keyboard allows me to input information and control the laptop. Each component has an important function that makes the laptop work efficiently. I like my laptop because it is powerful, portable, and helps me complete many tasks easily.

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During an important online meeting last month, my laptop screen suddenly went blank. The fan was spinning, but nothing would display. I quickly suspected the issue was either a display driver error or an overheating graphics card. I immediately performed a hard reset by holding the power button down and, thankfully, the machine booted back up normally. To prevent this issue in the future, I plan to be more diligent about cleaning the internal fan vents and will make sure to update my display drivers regularly to ensure optimal performance and avoid overheating.

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In the future, I want to work as a robotics engineer, creating human-like robots and smart devices. I hope to work in a spacious, well-lit office that is quiet and organized, so I can focus on my projects. My workspace would have a large desk, an ergonomic chair, a computer with multiple monitors, and storage for tools and components. I want a company that offers flexible working hours, a friendly and collaborative team, and opportunities for learning. Benefits such as health insurance, paid vacations, and performance bonuses would make the job even more rewarding.

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Warning:
An emergency cut-off switch box is an essential safety device. Incorrect installation can lead to electric shock, fire, or sudden equipment shutdown. Always follow the manufacturer’s instructions and local electrical codes. If you are uncertain, contact a licensed electrician before proceeding.

Instructions:
Turn off the main power and verify that no voltage is present with a reliable tester. Mount the switch box securely in an accessible, clearly marked position near the controlled equipment. Route and connect wires according to standards—tighten terminals and ensure proper grounding. Fit the red emergency stop button on the front panel for easy access and smooth operation. Seal the enclosure, attach the “EMERGENCY STOP” label, then restore power and test the switch. Follow lockout/tagout rules and always wear protective equipment.