Shandong Hongjitang Pharmaceutical Group Co., Ltd. was established in 1907. Hongjitang is a large famous GMP medical manufacturer in China, focusing on API raw material such as diosmectite, dl-muscone,l-muscone with anuuanl rodcution of 1500 tons dioctahedral smectite, 3000 tons dl-muscone and 200kg l-muscone.