国家/地区 中国（3）
IPC部 C（3）
IPC大类 C25（3）
IPC小类 C25D（3）
IPC C25D005/48（3）
发明人 GUO C（3）
公开年 2023（3）
申请年 2022（2） 
专利权人 GUANGZHOU UL.（3）

Neodymium-iron-boron plating trivalent black chromium and plating layer structure of graphene, has citrate pre-plating nickel layer that is prepared from inside to outside sequentially of substrate, and graphene sealing layer.

PENG C, LAI H, GUO C, LI X

Dull nickel-plated and graphene-enclosed plating structure for zinc alloy die-casting parts, has zinc-nickel alloy plating layer that is prepared from inside to outside sequentially zinc alloy base portion.

LAI H, CHEN K, GUO C

Neodymium-iron-boron plating black zinc and plating layer structure of graphene, has citrate pre-plating nickel layer that is prepared from inside to outside sequentially of substrate, and trivalent chromium black passivation layer.

LUO X, PENG C, GUO C, LAI H