About Us Read More+. Zhangjiagang Eceng Machinery Co.,Ltd. is the professional manufacturer of PET stretch blow moulding machines, filling machine, moulds in China. It was founded in 2007, starting with PET blowing machine. It's located at NO 26, Fenghuang Intelligent Industrial Park, No. 8 Jifu Road, Zhangjiagang City,Jiangsu Province, China.