A We respond within 8 hours on business days and provide solutions within 24 hours. For emergencies (like production line stoppages), we can coordinate local partners for on-site support. For non-urgent issues, we provide guidance via video conference or email.

A We use a "three-layer protection" packaging method: chains are coated with anti-rust oil, wrapped in VCI film, and sealed in waterproof plastic and wooden cases. This ensures no rust during sea freight (up to 60 days). Vacuum packaging with desiccants is also available for precision parts.

A For bulk purchasers, we offer online or offline training covering daily inspection (measuring elongation, checking for cracks), lubrication methods (oil bath vs. drip lubrication), and replacement criteria (e.g., replace if elongation exceeds 3%) to help extend the chain's service life.

A  We will arrange for technical engineers to diagnose remotely or inspect on-site to analyze the cause (e.g., insufficient lubrication, overload, or sprocket misalignment). If it's a product quality issue, we replace it for free. If it's due to improper use, we provide a rectification plan (e.g., adjusting tension, optimizing lubrication cycles)

A We have extensive experience in exporting worldwide. We can arrange shipping via sea freight, air freight, or express courier (DHL, FedEx, etc.) depending on your urgency. We handle all export documentation to ensure smooth customs clearance in your country.

A We guarantee that all products leaving our factory undergo strict quality inspections, including tensile testing and flaw detection. If you discover any manufacturing defects or shipping damage upon receipt, please take photos and contact us within 7 working days.

A ·In-stock standard itmes:Usually shipped within 3-7 working days after payment confirmation.

·Customized products:Typically require 15-30 days,depending on the engineering complexity