It is reported that the film with nearly 500 years of history is a national Chinese medicine protection variety, its traditional production technology has been listed in the national non-legacy list, is the first batch of "Chinese time-honored brand" recognized by the Ministry of Commerce. Product exports from all over the world, for more than 20 years, exports ranked in the forefront of China's foreign trade single varieties of Chinese-made pharmaceuticals, becoming the "Chinese symbol" on the Maritime Silk Road.