Longda Group is one of the top 100 enterprises in China's food industry, with products covering more than 500 varieties of foreign trade, grain and oil, and meat.
 
In 2006, Longda became one of the first batch of export-free food and agricultural products in China, and its testing center can detect more than 1,000 indicators such as pesticide residues, additives, heavy metals, etc., and has been recognized by the National Accreditation Board for Laboratories of China.
 
Longda's main mung bean vermicelli, snowflake vermicelli and mung bean vermicelli are made of pure mung bean starch produced in Longda standard organic mung bean farm, mung bean vermicelli is of the best quality, the silk diameter is extremely fine, but the body is softer than the twin tower vermicelli after boiling, and the sense of tendon is slightly inferior, which is because the starch process is not as good as the twin towers, but it is also smooth enough, and the price is slightly lower than that of the twin towers, 188g mung bean vermicelli is priced at 8.5 yuan.
 
Longda Longkou vermicelli is also made of mung bean starch and pea starch, the price is higher than mung bean vermicelli, 200g is sold for 12.8 yuan, not very cost-effective, plus 1 yuan can buy 450g of Longkou vermicelli in Shuangta.
 
Flake vermicelli has mung bean wide flour and mung bean flour skin, the width of mung bean wide flour is relatively rare in the market, the width is less than 5 mm, the thickness is smaller than the flour skin, it is better to say that it is a wide flour than to be flattened vermicelli, after boiling, it is soft to hang chopsticks, chopsticks are not good and want to eat mung bean vermicelli can be considered. The appearance of mung bean flour skin is very similar to that of the twin towers, but it is not as smooth as the twin towers, and the price is about the same, 200g is sold for 8 yuan.
 
Longda also has sweet potato vermicelli products, but it is relatively rare in the market, Longda vermicelli is a traditional straight vermicelli, refined vermicelli is pressed into a wavy shape by a machine, the ability to absorb soup and hang chopsticks is stronger, easy to cook, but the sense of tendon is average.