Yonghua Ma

2 Patents

• US124739852025

  Valve Core and a Pull-out Faucet Thereof

  Ningbo Wanhai Cartridge Technology Co., Ltd.

  0 cites
• US120987732024

  Core Seat for a Valve Core and a Valve Core Module

  Ningbo Wanhai Cartridge Technology Co., Ltd.

  0 cites