Chongqing Kailian Yongrun Industrial Co.,Ltd. (former Chongqing Kailian Yongrun Instrument Co.,Ltd.) was founded in 2002 in Chongqing, China. The company produces various kinds of petroleum testing equipment, and exports under the name of Donsim Industry Group Ltd..
At the end of year 2012, in order to expand business scale, and adapt to the demand of changing market and development strategy, our company renamed Kailian Yongrun Industrial from Kailian Yongrun Instrument and make some adjustments to the business structure. The manufacturing of flash point-related oil testing equipment was transferred to our partner company in Chongqing, and other businesses were remained at Kailian Yongrun. With continuously development of business, our company established Qingdao branch and Suzhou branch in 2013 and 2015 respectively.
In 2015, most of our petroleum testing equipment obtained CE certification. Through our implementation of the CE standard, we follow the most strict quality control regulations to manufacture the equipment.
Cost-effective is sure. The sense of quality is essential. The delivery time is holy. There might be a moment that we lose an order, but there will never be a moment that we will lose our trust, our promise, which keep us going on. And there will never be a moment that we will stop thinking with our customers. We work with people with passion. We work with suppliers with trust. We work with customers with relation.
We will continue listening attentively to our customers and innovating products and services to meet customers' demands. We want to fulfill needs and requirements of our customers in a best possible way to become a preferred supplier. We look forward to being your long term trusted partner. Your contentment is our pursuit.