Expanded solf-graphite as basic material, adding High strength material, and is pressed into closed type opening type, blame type Self-tightening and strengthening type special disposal.

• 以膨胀柔性石墨为基础材料，添加高强度材料，经特殊处理压制成形，分为封闭式、开口式、异型、自紧型、加强型。