I am investing money every month to a company for 10 years and they will give me variable profit every month. I can take out my money any time but I might not get my full capital and profit unless I complete 10 years. They are buying and selling building construction equipments. They clearly said that they are not dealing with alcohol, tobacco and interest. is this halal?
You must be cautious as this sounds like a ponzi company and all your money would be lost. One must not believe whatever people say to him! His money invested must constitute a percentage of the existing company and if its capital. Without knowing this, there would be ambiguity.