The output of synthetic rubber has greatly exceeded that of natural rubber, and the largest output is styrene butadiene rubber.

It is characterized by cracking, stickiness, hardening, softening, chalking, discoloration, mildew, etc.

It is characterized by cracking, stickiness, hardening, softening, chalking, discoloration, mildew, etc.

It is characterized by cracking, stickiness, hardening, softening, chalking, discoloration, mildew, etc.