Xi'an Yunyi Instrument Co., Ltd. is a professional manufacturerthat engaged in the fields of pressure measurement instrument, thechief engineer Mr Tian has more than 30 years on this area, he isone of the engineers who introduced the Rosemount technology. Wespecializing in developing high precision pressure transmitter andpressure gauges. And we also develop temperature transmitter, leveltransmitter, densitometer etc. They are widely used in chemical,petroleum, paper, electricity, city gas, environmental protection,water treatment and other fields.