It seems like you're referring to OEM replacement batteries for the Huawei P8 Max mobile phone. The specific battery models you're mentioning are:

• HB30A7C1ECW

• HB26A5I0EBC

• HB2994I8ECW

These battery model numbers are specific to Huawei devices, particularly for the Huawei P8 Max. Typically, these batteries are designed to be replacements for original Huawei batteries and are made using Li-polymer (Lithium Polymer) technology.

If you are searching for a battery manufacturer that produces these or similar models, many manufacturers offer OEM (Original Equipment Manufacturer) solutions for smartphones. Longhehui seems to be one of those suppliers, likely offering custom and bulk orders for replacement batteries.

Would you like help finding a specific supplier or more details on these battery models?