I am Sara from Zhengzhou Ruipu Biological Engineering Co,.Ltd. Our company is specialized in the manufactureing of mineral nutrients and premix. As the leader in domestic mineral nutruients, we have three leading modernized production base and the biggest GMP premix workshop in China, which can supply high-quality nutrition supplements: calcium, ferric, zinc, coper, managanese and vitamin-mineral premix.Products are sold to more than thousands of food, pharmaceutical, healthcare products, salt industry corporation and other industries of 30 domestic provinces and cities and exported to the America, Europe, Africa, and Southest Asia, etc. We sincerely welcome customers from all over the world to cooperate with us!