Company profile Xi'an Saiyang Bio-technology Co., Ltd. is located in Xi'an High-Tech Development Zone. Xi'an Saiyang Bio-technology Co., Ltd. is a high-tech enterprise engaged in developing, processing manufacturing and marketing natural plant extract and Chinese herbals. We have developed many different herb extract and monomer. With a strong working team and serious quality control, our main products are matrine, puerarin, amygdalin, icar, lutein, salidroside, schisandra chinens P.E, ...