On November 30, 2013, the "KZ44Y type open plate valve" and "PZ43Y type high temperature slag discharge plate valve" developed by Tiante Valve Group Co., Ltd. were organized by the China Machinery Industry Federation and worked in Tiante Valve Group Co., Ltd. The responsible company held a new product appraisal meeting. The appraisal meeting invited seven industry authoritative experts, including Professor Du Zhaonian from Lanzhou University of Technology, Professor Tang Rongming from Tsinghua University, and Professor Zhu Shaoyuan from Hefei General Machinery Research Institute. Director Xia Zhimin of the Economic Development Bureau of Lishui Economic Development Zone attended the meeting and welcomed the arrival of the experts, introduced the basic situation and customs of Lishui to the expert group, and gave care and support to the research and development of new products. The expert group listened to reports on research and development, product inspection, scientific and technological novelty search, user opinions, etc., visited the production site, analyzed the necessity and innovation of product research and development from an industry perspective, and fully affirmed it. After discussion, product appraisal opinions were formed, and the products of the two projects are at the leading domestic level.