Here are some key points for choosing a reliable aluminum door and window customization manufacturer:

1. Qualifications and reputation:

Check the manufacturer's business license, production license and other relevant qualifications to ensure its legal operation.

To understand the reputation of the manufacturer in the industry, you can obtain information through online reviews, customer word of mouth, industry forums and other channels. For example, some manufacturers are widely praised in the market because of their stable product quality and good after-sales service.

2. Production capacity:

Investigate the manufacturer's production equipment and process level. Advanced equipment and mature technology can ensure the quality and precision of the product.

Ask the manufacturer about the production scale and output. Manufacturers with larger production capacity are usually more able to deliver orders on time. For example, some large manufacturers have automated production lines that can efficiently produce a large number of high-quality aluminum doors and windows.

3. Product quality:

Request to see the product's quality inspection report to understand whether its various performance indicators meet national standards.

You can check the manufacturer's samples on site to check the material, workmanship, sealing and other aspects of the doors and windows. For example, high-quality aluminum doors and windows are made of solid materials, with smooth surface treatment and tight sealing strips.

4. Design capability:

See if the manufacturer has a professional design team that can provide personalized design solutions according to your needs.

The design team should have rich experience and be able to take into account factors such as the aesthetics, practicality and safety of doors and windows.

5. After-sales service:

Understand the manufacturer's after-sales service policy, including warranty period, maintenance services, etc.

Good manufacturers will respond to customers' after-sales needs in a timely manner and provide effective solutions. For example, free repair or replacement of door and window parts with quality problems during the warranty period.

6. Price and cost-effectiveness:

Compare the quotations of different manufacturers, but do not use price as the only criterion for selection.

Consider product quality, service and other factors comprehensively, and choose manufacturers with high cost-effectiveness. Some manufacturers may have slightly higher prices, but the quality of products and services they provide is more guaranteed.

7. Field investigation:

If conditions permit, go to the manufacturer in person for a field investigation to understand its production process, management level, etc.

Communicate with the manufacturer's staff to feel their professionalism and service attitude.