Roller Chain, Sprocket, Pulley manufacturer / supplier in China, offering Superior Large-Size Double Pitch Cast Welded Bent Scraper Transmission Conveyor Engineer Chain with Heavy-Duty Attachment, Sturdy Large-Size Double Pitch Cast Welded Bent Scraper Transmission Conveyor Engineer Chain with Ultra-Durable Attachment, Reliable Large-Size Double Pitch Cast Welded Bent Scraper Transmission Conveyor Engineer Chain with High-Performance Attachment and so on.