1, Jinan Shuguang Book Co., Ltd. is a big distributor of medical and health books, teaching materials and audio-visual products in Shandong Province, and an A-level provincial agent of People's Health Publishing House, People's Military Medical Publishing House, China Traditional Chinese Medicine Publishing House, China Medical Science and Technology Publishing House, Peking University Medical Publishing House and Science Publishing House.

2. Guangdong Zhong Da Lingnan Book Co., Ltd. This company is a professional sales company of books and teaching materials under Sun Yat-sen University Industrial Group, and is a special distributor of Shanghai Foreign Language Education Publishing House, People's Health Publishing House, China Medical Science and Technology Publishing House and China Traditional Chinese Medicine Publishing House in Guangdong Province.