Norethindrone Acetate 51-98-9 supplier INTRODUCTION Shenzhen OK Biotech Technology Co., Ltd.has been established as an integration of industry and trade pioneer Corporation,located in Shenzhen,Guangdong Province,PRC China. ABOUT US Luohe,Henan province is our production base. Luohe OK Biotech Technology Co., Ltd.is covering an area of 10,000 square meters, with more than 200 staffs.Ever since...