On Apprenticeship System of Aluminum Alloy Doors and Windows

Young people learned this relatively quickly. Generally, the plenary session takes 1 month, and it will be proficient in 2-3 months, and then it will be done elsewhere. Tell people that you have worked in a shop for many years, and people think that you are used to being an apprentice and feel that you are proficient. If you know, you must jump ship. This is my experience. My salary is estimated at 2000.