Ask Netease YEATION electric toothbrush foundry or Philips toothbrush foundry.

Shanghai Xiefu Electric Appliance Co., Ltd. Generally, you can buy Philips electric toothbrushes at Netease YEATION, and you can see their foundries by looking at the manufacturers or entrusting suppliers. I paid attention to buying sonic toothbrush on Netease's strict selection before. Later, I changed a Philips electric toothbrush and found that the manufacturer was Shanghai Xiefu Electric Appliance Co., Ltd..