LAIZHOU CITY LAIYU CHEMICAL CO.,LTD   LAIZHOU JINXING CHEMICAL CO., LTD   Laizhou Kaida Instrument Co. Ltd   Daye Tengfei Factory   Daye Tengfei Sponge Factory, Changzhou   Laizhou Keda chemical Machinery Co.,Ltd   Changzhou Daye Tengfei Sponge Factory   Hebei Tengfei Co.,Ltd   Laizhou Yuanda Chemical Industry Machinery Factory   hebei tengfei metal factory   Hebei Tengfei Metal Factory   ShanXi tengfei Chemical Co.,Ltd   Laizhou Shanshui Chemical Co.,Ltd   Laizhou shanshui Chemical Co.,Ltd.   Shanxi Tengfei Chemical IM&EM CO.LTD   Laizhou Anda Plastic Co., Ltd   Laizhou ZhongDa Chemicals Co.,Ltd   Shandong Province LaiZhou jiecheng Industry co. ltd.   Laizhou Guangtai Chemicals Co., Ltd.,   Laizhou Xinhe chemical Co. Ltd