Sinosteel Maanshan Institute of Mining Research Co.,LTD.(A member of China Sinosteel Group) is specialized in manufacturing high performance hollow glass microspheres(glass bubbles) as weight reducing agent with high crush strength for light-weight cement slurries(oil well cementing)/low-density oil drilling fluids,lighweight composites/modified plastics,thermal insulation paints/coatings and a various applications with good quality and very competitive price. Y series is a specific series for oil well from us.We now have a grade Y12000,which true density is 0.60g/cc with a 12000psi crush strength. Our products can reduce your costs while maintaining your quality! Getting free sample or Any inquiries on glass bubbles,Please contact: Felix Wu Email: felix@mimr.cn ; microspheres@126.com TEL: +86 18096446150 www.mimr.cn Group website: http://en.sinosteel.com