Recently, Shandong Jieyuan Engineering Testing Co., Ltd. signed a contract with our company for the second D300FX-D15 dual specimen protection hot plate thermal conductivity meter. The company purchased the first thermal conductivity meter from our company in May 2019, and after nearly three years of use, after fully confirming the quality of our company's products, purchased a second thermal conductivity meter.
Tianjin Friend Technology Co., Ltd
March 3, 2022