日韩性爱第一页久操视频免费看_伊在人香蕉99久久_丁香五月天亚洲综合网_国产成人福利资源在线观看_全黄做爰100分钟视频_国产高清无码免费a视频_91制片一二三专区亚洲_亚洲黄片毛片在线观看

            Heshan Boan Fire Resistant Glass Technology Co., Ltd. was established in early 2011 and is located at No. 20-3, Longkou Section, Jiangzhao Road, Longkou Town, Heshan City, Guangdong Province. Boan Company has been certified by the Fire Product Conformity Assessment Center of the Emergency Management Department and passed the ISO9001:2015 quality management system certification. Now it has two major production bases. The headquarters covers an area of 30,000 square meters. The second production base is located next to the headquarters and covers an area of 20,000 square meters. Boan Company has various professional technical scientific research personnel and large-scale advanced technology equipment at home and abroad, and is equipped with excellent quality inspection facilities.

            Boan Company mainly produces and sells: single layer fire resistant glass, high borosilicate fire resistant glass, composite heat-insulated fire resistant glass, nano crystal  silicon fire resistant glass, steel frame fire resistant glazed windows, aluminum alloy fire resistant glazed windows, heat-insulated oversized glazed fire resistant doors, smoke barrier, fireproof glazed non-load-bearing partition walls, large fireproof glazed curtain walls, aluminum alloy non-insulated fireproof glazed doors, and fireproof glazed door and window systems