One is Shandong Dong'a Colla Corii Asini Co.

One is Shandong Dong'a Xiuyuan Colla Corii Asini Bio Group Co.

The former is an old brand, and the latter was just established in the past few years, but the quality and effect are very good.

Shandong Dong'a Colla Corii Asini Co.'s logo is the auspicious cloud, and its address is 78 Colla Corii Asini Street.

The logo of Dong'a Xiuyuan Colla Corii Asini Bio Group Co., Ltd. is a soaring magpie, and its address is No. 1, Jiao Guang Road, Dong'a Industrial Park.

You can recognize the logo, with personal preference to choose to buy these two, the other companies are some workshop manufacturers.