Inventor

SUN ZHAOJIN

CN2 patents

Patents

2 patents

US9758180B2Sep 12, 2017

Securing system for freight wagon and freight wagon

CRRC QINGDAO SIFANG CO LTD5 citations64

US9809147B2Nov 7, 2017

Position-limiting device

CRRC QINGDAO SIFANG CO LTD1 citations44