It's not clear what you mean by "line charging", whether it refers to the purchase strategy, precautions for use, or other related strategies for line charging for electronic devices? If it is a mobile phone line charger, the following provides you with a possible strategy:

First, the purchase strategy

1. Adaptability First of all, make sure that the cable charger is fully compatible with your device, including the interface type (such as Type-C, Lightning, etc.), output voltage and current, and other parameters.

2. Brand and quality Choose a well-known brand of wire charging, usually the quality is more guaranteed, can reduce potential safety hazards.

3. Material High-quality wires are generally made of durable and non-entanglement materials, and the plug part is finely made.

3. Certification mark Check if there is a relevant certification mark, such as 0C certification, etc.

2. Precautions for use

1. Avoid excessive bending Frequent excessive bending of the charging cable may cause damage to the internal wiring.

2. Do not pull Do not pull hard when plugging and unplugging, so as not to cause damage to the interface or cable.

3. Moisture-proof and dustproof When not in use, try to keep it in a dry and clean environment to prevent moisture or dust.

4. Avoid winding Long-term winding may affect the life of the wire.

Can you elaborate in more detail about your specific needs for the line charging strategy? For example, it is a line charge for a specific device, or a guide to using line charge in a specific scenario, etc., so that I can provide you with more accurate and more suitable content for your needs.