Laiyang Yadong Bio-Technology Co., Ltd. A joint-venture formed in 2001 by Laiyang Yadong Clinical Lab Products Co., Ltd. and Linkseas Trading Co., Ltd. of Taiwan. Laiyang Yadong Bio-Technology Co.,Ltd. is located in the Jiaodong Peninsula of Shandong Province, where it is well known as the native place of … Continue reading Laiyang Yadong Bio-Technology Co., Ltd.