I. Product Characteristics Dimension
1. Material Selection: Plastic material has outstanding cost-effectiveness and is suitable for large-scale distribution; metal texture enhances brand value and is suitable for high-end positioning; rubber material has strong color expression and is conducive to creative design presentation.

2. Structural Characteristics: Special-shaped structure enhances visual impact, standard size is convenient for daily carrying, and the design needs to be weighed according to the audience's usage scenario.

II. Design Effect Dimension
1. Brand Elements: The proportion of LOGO must comply with the visual recognition specifications, and the corporate standard color should be used as the main color.

2. Audience Preference: Popular color matching and abstract patterns can be used for young groups, and simple geometric shapes are recommended for business scenes.

III. Process Requirements Dimension
1. Printing Technology: Four-color printing needs to ensure the clarity of the dots, and spot color printing should check the Pantone color card deviation value.

2. Surface Treatment: Etching technology is recommended for metal materials, and UV lamination technology is suitable for plastic materials to enhance durability.

IV. Cost Control Dimension
1. Unit price composition: Bulk purchases can reduce mold sharing costs, and complex processes require additional labor costs.

2. Total price strategy: It is recommended to adopt a step-by-step quotation model and negotiate the best procurement plan based on annual demand.

If companies want to understand the types of promotional key chains, they can analyze the characteristics of the customer base and what types of key chains they are mainly interested in. They can customize the key chains that customers like, which will bring better results to corporate publicity.