Chongqing Haodun Scientific and Technological Development Co., Ltd. is professionally engaged in various oil-processing equipment. Our company is a high-tech manufacturer with military enterprise as background. Our company takes research, design, manufacture and sale by ourselves. As a result of a large amount of outstanding military industrial professional and scientific research people's unceasing endeavor and innovation with wide absorption of domestic and foreign advanced oil-filtering technology, we have successfully developed various models of oil-filter equipment of HT series which...