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详细内容 roof spray foam is a polyurethane rigid foam with up to around 95% closed cell content. It is produced through the mixing of 2 initially liquid components, namely the A-component (polyol) and the B-component (diphenylmethane diisocyanate, knownas MDI for short). The mixing of the two components produces a reactive mixture which foams under heat evolution.#Name of materiallayer thickness (cm)consumption of material (kg)density in the nucleus kg/m31External20,63030,941,251,53Internal 21,26031,842,453 联系方式 Email nbwu@iway.na 公司名 HARVARD ENTERPRISES CORPORATION 国家 加拿大 联系人 JOHNNY LI 地址 24 WHITE OAK CRESCENT,RICHMOND HILL,ONTARIO 电话 001 416 7210577 **** Hidden Message *****Email rharrill@bellsouth.net,vkpumps@vsnl.com,teche@egmo.co.il,ballen@brycecorp.com,reyflowers@yahoo.com,
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