The national machinery industry standard JB/T5071-1991 is defined as: asbestos, paper pulp and other substrates, adding appropriate amount of filler, using resin as binder, using paper and heat by a pressing process.
The national machinery industry standard JB/T5071-1991 is defined as: asbestos, paper pulp and other substrates, adding appropriate amount of filler, using resin as binder, using paper and heat by a pressing process.