Firstly, the customer provides product parameter requirements, or JINGHUAN provides specific solutions based on customer needs. The specific information that needs to be provided is as follows:

1. Contact information: company name, phone number, WeChat, QQ, email, and other valid contact methods.
2. Product size specifications: outer size, inner size (maximum capacity).
3. Acoustic parameters: including internal sound pressure measurement values, cutoff frequency (for soundproof rooms).
A. Requirements for internal background noise.
B. Description of main on-site noise sources (e.g. central air conditioning, fans, water pumps, vibrating equipment, etc.).
4. Installation noise source environment: installation location and A/C sound level.
5. Other requirements: Effective dimensions of doors and windows, ventilation and heat dissipation system, etc.
6. Types: Can be divided into detachable, fixed, movable, modular assembly, etc.

After the customer provides the above parameter values, the JINGHUAN Products team will provide a detailed quotation plan within 1-3 working days. The detailed quotation plan contains the following information:

1. Product confirmed parameter values.
2. Product technical scheme (production process plan, material details, construction technology, product design drawings, cost budget list, etc.).
3. Cooperation instructions, after-sales instructions, inspection instructions.
4. Specific project operation process.

Note: Because JINGHUAN Products colleagues often travel or meet with customers, they may not be able to respond in a timely manner. You can leave a message directly, and we will contact you as soon as possible.