Ever since Cangjia received an order of piper longum extract from a famous American customer ten years ago, Cangjia has been continuously investing its efforts to obtain high quality and stable supply of piper longum raw materials, continuously developing and optimizing the production process to improve the potent of its piper longum extracts, and adopting unique technology to remove various potentially harmful substances such as pesticide residues and heavy metal residues.Currently, Cangjia produces more than 50 tons of piper longum extract series annually.