With a core with a single skeleton fabric winding, overall no joints. The endless belt vulcanizer out, with the ends of the perimeter size standard, no bell, belt machine deviation. Cover with plastic high strength wear-resistant rubber formulations, long service life, with uniform thickness plane smooth running smooth, accurate measurement. Q3210 Tracked characteristics: 1, high strength, large transmission power. 2 flex without slipping. 3 cross drive connector easily. 4, elongation, durable