Hangzhou Biyou Building Materials Technology Co., Ltd. is an International sales office, the associated factory is Hebei Biyou New Material Technology Co.,Ltd - which has more than 20 production lines and advanced management system. We specialize supply of passive fire stopping products, acoustic and weather sealing system for the construction industry. Our products are designed with thermal, acoustic and weather containment in mind ,so you can be assured that Biyou products / system will provide an integrated, cost effective solution.After 15 years of marketing experiences, we developed and generated many products that meet the stringent requirements in the field of fire safety, quality, production and management standard. We have achieved IS0 9001 certificate, AS/BS/EN/UL Certificate approved by Intertek and other international testing institutions. Most of products comply with requirements of EN1634-1:2014+A1:2018, AS1530.4:2014, ASTM-E814-13A, CAN/ULC-S115 and UL1479. We have exporting to Europe, American, and Asia, Middle East as well as other countries. We can always provide support to our clients with their projects, from start to completion in any part of the world.