91亚洲国产成人久久精品网站,黄 片 成 人 片 免费,午夜成人爽爽爽视频在线观看,人妻精品久久久久中文字幕123

石英檢測
Your current location: Home >> About us >> Company profile

Jiangsu Jingrui Quartz Industry Development Institute Co.,Ltd is located in the east asia-europe continental bridge bridgehead - lianyungang city, jiangsu province, is the domestic specialized is engaged in the quartz industrial development research of high-tech enterprises, is China's quartz industry association member units, has passed ISO9001 international quality management system certification, the company has a professional talent team, Advanced production equipment  precision testing instruments,  has  quartz mine cooperation mining, high purity quartz sand  high purity ultra-fine quartz powder preparation to quartz products processing, so as to ensure the stability  consistency of final product quality.


石英檢測