Uninstalling Yarn depends on how you initially installed it. If you installed Yarn via npm (Node Package Manager), you can uninstall it by running `npm uninstall -g yarn` in your terminal. This removes Yarn globally from your system. For those who installed Yarn through a package manager like apt for Ubuntu, or brew for macOS, you would use the corresponding remove command, e.g., `sudo apt-get remove yarn` or `brew uninstall yarn`. Remember, if Yarn was installed by another means, such as a direct download from the Yarn website, you'll need to refer to specific instructions or simply delete the Yarn files and folder manually. Always ensure to also remove any environment variables related to Yarn in your shell configuration files to prevent any conflicts or issues with other package managers.

Global ilmenite production is estimated at approximately 11.1 million tons in 2020.

The main producing countries of ductile ilmenite are China, Australia, Canada, Mozambique, South Africa, and India. The annual output of these eight countries is 5.56 million tons, accounting for approximately 79.2% of the global total output.

Other countries (including Kenya, Senegal, Ukraine, Norway, Vietnam, the United States, Madagascar, Brazil, etc.) have an annual output of 1.46 million tons, accounting for approximately 20.8%.

PVC (Polyvinyl Chloride) and CPVC (Chlorinated Polyvinyl Chloride) are both popular for piping due to their durability and cost-effectiveness. However, they differ in their chemical composition and temperature tolerance. PVC is suitable for cold water applications, while CPVC can handle both hot and cold temperatures due to its additional chlorine content. Mixing PVC and CPVC is not advised as they require different types of cement for bonding, and their thermal expansion rates and chemical resistances vary. Using the wrong cement or combining these materials can lead to system failure, leaks, or other hazards. If integration is necessary, a proper transition fitting made for connecting PVC to CPVC must be used to ensure a safe and reliable connection.