In this case, the demand for power PCs on the market of each country is different. Some countries have a requirement for some countries, such as Korea or most countries did not want to.
In this case, the light bars on the market of each country are different. Some countries have requirements such as Korea. Some countries do not want it.
In this case, needs light sticks in the market of each country is different. Some countries have many requirements such as Korea. Or some countries don't want.