... : strictly upon international standard or your request, and no flash.5. Color: black, transparent, green, red, yellow, grey, purple, pink, ... FDA, NSF, UL, etc.7. Style: O ring, X ring, D ring, V ring, etc.8. Applications: automobile, electrical appliance, mechanical ... 50 tons to 300tons.4. Secondary vulcanization oven: 2 sets.5. Production capacity: 5000,000pcs.6. High efficient management to achieve ...