Yes,we need ask 50% fee as deposit before we start on the projects.You know we need do a lot of work to extract the program
code from MCU ,so it will cost us much time and money.
Sometimes some customers have new ideas,the old project is no need for him,so he will not take the files,or some customers
think the project can not bring much more money to they,so the customers will not pay for the files! These action will waste our