For the height of tables and chairs, the country has established standards. Among them, the height standard of table furniture is 700-760mm, and four specifications; the seat height of chair-stool furniture is three specifications of 400-440mm. In addition, it is also stipulated that tables and chairs are used with standard sizes, and the height difference between tables and chairs should be controlled within the range of 280-320 mm. The correct height of the table and chair should enable the person to maintain two basic vertical positions while sitting: First, when the two feet are placed on the ground, the thigh and the lower leg can be substantially vertical, and the front edge of the seat cannot form an oppression on the lower plane of the thigh. The second is that when the arms are naturally suspended, the upper arm and the lower arm are substantially perpendicular. At this time, the height of the table should be just in contact with the lower plane of the lower arm, so that people can maintain the correct posture and writing posture. If the height of the table and chairs is unreasonable, it will directly affect people's sitting posture, which is not conducive to the user's health. As for the size of sofas, the front width of the sofa seat should not be less than 580mm, the depth of the seat surface should be in the range of 480-600mm, and the height of the seat surface should be in the range of 360-420mm. The height of the hanging closet is 40 to 60mm from the top of the clothes rail to the top of the cabinet, which is a waste of space. If it is small, it will not fit into the hanger. The distance from the bottom of the clothes rail to the bottom of the cabinet should not be less than 1350mm. The depth of the wardrobe mainly considers the shoulder width factor of the person, which is generally 600mm and should not be less than 500mm, otherwise only the oblique hanging can close the door. There are also standards for bookcases, and the shelf height should not be less than 220mm. Less than this size, you will not be able to put 32 plain books. The shelf height is usually 300 to 350mm. Wardrobe Brand Sophia Wardrobe Furniture Space Hanger Door Armchair
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State stipulates dimensional data of furniture that meets environmental standards