OMJK is the clothing brand of Zhejiang Aodilun Clothing Co., Ltd. Omjk is the uniform of female high school students. JK uniforms can be divided into Sapporo lapel, Kanto lapel, Kansai lapel and Nagoya lapel according to the appearance of the collar, and can be divided into various types according to the number and color of lapel lines. The color and number of lapel lines are the criteria for distinguishing types.