1. Machine Specifications and Customization

Profile Requirements: Ensure the machine can produce the specific profiles you need (e.g., roofing, panels, purlins). Chinese manufacturers often offer customization, so share detailed profile drawings and specifications.
Material Compatibility: Confirm that the machine can handle your chosen materials, including material thickness, width, and gauge.
Production Speed: Choose a machine that meets your production speed requirements, which is essential for maintaining efficiency and meeting demand.

2. Quality and Durability

Roller and Frame Quality: Look for machines with durable rollers (often made from hardened steel) and a robust frame to ensure long-term use.
Precision of Forming: High-precision forming capabilities are critical, especially if you need tight tolerances.
Component Quality: Inspect the quality of essential components, such as servo motors, PLC systems, hydraulic systems, and safety enclosures.

3. After-Sales Service and Technical Support

Service Availability: Check if the manufacturer provides on-site installation, setup support, and operator training. Some companies offer these services for overseas clients.
Spare Parts and Maintenance: Ensure easy access to spare parts and inquire about maintenance schedules to avoid production downtime.
Warranty and Support: Reliable after-sales support with a warranty on parts and labor can be a strong indicator of quality.

4. Power Requirements and Compatibility

Voltage Compatibility: Ensure the machine’s power supply meets your country’s voltage and frequency standards, as power setups vary significantly.
Energy Consumption: Machines with efficient motors and optimized power usage can help reduce operational costs.

5. Machine Pricing and Total Cost of Ownership

Machine Cost: While price is essential, consider the machine's long-term performance and durability. Avoid low-quality options that could lead to high repair costs.
Shipping and Import Duties: Calculate the total cost, including shipping, taxes, and import duties, to understand your investment fully.
Value-Added Features: Compare the features provided for the price, such as optional extras like coil car tippers, remote PLC systems, and automatic stackers.

6. Manufacturer Reputation and Certifications

Manufacturer Experience: Choose reputable manufacturers with a strong presence and positive reviews in the roll forming industry.
Industry Certifications: Look for ISO certifications or other industry standards, indicating quality manufacturing practices.
Client References: If possible, ask the manufacturer for client references or case studies to understand their track record with international buyers.

7. Compliance with International Standards

Safety Standards: Ensure the machine meets global safety standards and includes necessary safety enclosures and guards.
Compliance Documentation: Verify that the manufacturer provides compliance certificates for easier customs clearance.

8. Customization for Shipping and Installation

Shipping Preparation: Confirm that the machine is packaged appropriately for international shipping to avoid damage.
Installation and Setup Guidance: Request detailed setup documentation or videos, especially if the manufacturer does not provide on-site installation.

9. Remote Control and Automation Options

PLC and Automation: Many machines now include PLC systems with remote control, enhancing operational efficiency.
Remote Troubleshooting: Some manufacturers offer remote diagnostic and troubleshooting capabilities, which can be very beneficial if local technical support is limited.

Considering these factors will help ensure you purchase a high-quality roll forming machine that fits your production needs, budget, and long-term operational goals.