General introduction: the semi-soft porcelain brake pad has already obtained a national patent. The semi-soft porcelain friction material without asbestos is a new surrogate for the friction material products used in the friction-braking devices of all kinds of transportation vehicles and engineering machines. As a friction material of no asbestos and little metal, semi-soft porcelain brake pad can be applied for all kinds of vehicles and engineering machines. It consists of adhesive, sintered materials, elasticizer, and many kinds of friction filling materials. Characteristics: 1) A low specific gravity, high intensity, stable coefficient of friction and a long life 2) No pollution for the environment, a completely new and environment-protecting product 3) No harm to the braking hubs and vanes, especially applicable for top-end cars, drilling rigs, heavy vehicles, special mining heavy-duty mechanic braking blocks and clutch facings 4) A special feature of having no fumes, no spark under all kinds of hard work conditions - a feature especially advantageous when used in oil and gas boring rigs 5) No braking noise, a point fundamental to help increase the urban environment 6) A steady braking, offering a progressive sense, thus the drivers can experience a braking effect like that of ABS