Will the aluminum mold factory close down if it doesn't receive the bill?

No. There will be a certain cash flow in the account of aluminum film factory company, which will be used to pay employees' wages and purchase production materials. There will be regular merchants to deliver the bill. Therefore, the company will not go bankrupt, as long as there is a steady stream of money, it will be able to support it. Bankruptcy is legal bankruptcy, which means that enterprises or shops close down because of losses.