Yunnan Filter Environment Protection S.&T. Co., Ltd. is one of the key environmentally friendly companies in Yunnan Province. Our company is specialized in the fields of exhaust gas after-treatment for diesel engines and has become the leader in the industry for exhaust after-treatment in China. We have passed the ISO9001 quality system organized by UCS. The system is running very well in our company. We have participated the formulating of "Technical requirement for environmental protection product aftertreatment devices for diesel vehicle exhaust", which will be implemented...