Roller Chain, Sprocket, Pulley manufacturer / supplier in China, offering Top-Performing Heavy-Duty Power Transmission Precise Short Pitch Nickel Plating and Zinc Plating Driving Roller Chain (04-48) (A B series) with Attachments, Industrial-Duty High-Efficiency Power Transmission Precise Short Pitch Nickel & Zinc Plated Driving Roller Chain (04-48) (A B Series) with Attachments, High-Strength Reliable Power Transmission Precise Short Pitch Nickel Plating and Zinc Plating Heavy Duty Driving Roller Chain (04-48) (A B series) and so on.