Do you need any license or permits to open your own factory?

yes

Explanation:

The most common license and permit requirements for manufacturing businesses include:

a basic business operation license from the city or county where your business will operate

a federal employer identification number (EIN) -- also called a tax identification number -- from the IRS, and a similar tax ID number from your state's department of taxation or revenue

a fictitious business name or "doing business as" (dba) permit, if you will operate under a name that is different from your legal entity's registered name

zoning and land use permits that cover your manufacturing business's operations

sales tax license to sell your manufactured goods

health department permits if your manufacturing business includes the preparation or sale of food

building permits.

a manufacturer of printed circuit boards uses exponential smoothing with trend to forecast monthly demand of its product. at the end of december, the company wishes to forecast sales for january. the estimate of trend through november has been 200 additional boards sold per month. average sales have been around 1000 units per month. the demand for december was 1100 units. the company uses α = 0.20 and β = 0.10. make a forecast including trend for the month of january.