At what age can a child sit in a car safety seat?

[MacAnderson]

Children can sit in a car safety seat at six months old. It is important to choose a car safety seat based on the child's specific age and weight. Infants under one year old and weighing less than 10 kilograms should use a rear-facing infant carrier; children aged one to three years and weighing between 10 to 20 kilograms should use a convertible safety seat; children aged three to ten years and weighing between 15 to 36 kilograms should use a booster seat. The installation method for the safety seat is as follows: first, pull out the seat belt as much as possible, then thread the seat belt through the seat, secure it with the seat's red locking clip, and finally insert the seat belt into the buckle.