The size of No.2 flag is: 240cm× 160cm.

The size of the No.3 flag is: 192cm× 128cm.

The national flag we see every day is made according to the standard size of the national flag (except for special requirements). National Flag of the People's Republic of China is a five-star red flag with a red flag face and an aspect ratio of 3: 2. Flags made according to this ratio are more beautiful, and flags of other sizes are generally scaled according to the size of the national flag.

Extended data:

1949 On September 28th, the Presidium of the First Plenary Session of China People's Political Consultative Conference promulgated the Law of National Flag of the People's Republic of China, which clearly stipulated that the general standards of the national flag are as follows:

(1) is 288 cm long and 192 cm high.

(2) The length is 240 cm and the height is 160 cm.

(3) The length is192cm and the height is128cm.

(4) Length144cm, height 96cm.

(5) 96 cm long and 64 cm high.

The shape and color of the national flag are the same, but the five stars on the national flag are opposite. For convenience, this film only takes the left flagpole as the description standard. If the flagpole is on the right side, the left side in this document should be changed to the right side, and the right side should be changed to the left side.

References:

National People's Congress Network-People's Republic of China (PRC) National Flag Law

Baidu Encyclopedia-China People and the National Flag