About China cards
As famous russian cinema hero Comrade Sukhov sad, The East is thin thing.
So as asian cards. There are Imitations, Imitations of Imitations etc., etc.
If I can recognize different world publishers by cardbacks I can't do it with asian cards.
There are possible the same jokers in different countries.
As another famous russian literature hero Kuzma Prutkov (XIX c.) sad,
Don't believe own sight if You see inscription "Lion" at the tiger's cage.
For example, there is possible "Made in China" (Japan, USA, ...) at the cards of Korea.
For this reason I placed all my unknown asian cards to unknown Cnina cards.
In addition I placed some China cards to Shanghai cards, but it's my speculation.
If You know exactly - tell me please about it. Thank You in advance.
Standard Courts of China cards
Some usuful marks to determine printers

name wwpcm logo joker joker joker
AGC Playing Cards Hong Kong
Anhui dingyuan playing cards factory  Anhui
Anshan xinhua printing factory Liaoning
Baralho de cartas Macau
Cangnan Feiying Printing Co. Ltd. no
EAGLE Playing Cards Hong Kong
Fenghua Chunguang Playing Cards Factory Ningbo
Gammon Colour Printing Co., Ltd. d12491 GP
Hangzhou Longa Color Printing Co., Ltd Hangzhou
Hangzhou wenhua printing factory Hangzhou
Hangzhou Xiaoshan Bailing puke color printing Co.,Ltd. link
Hangzhou Xintian Paper Industry Co. Hangzhou
Hangzhou yaguang playing cards colour printing company Hangzhou
HCG Hong Kong
Hebei Jianglong Printing Co., Ltd no
Hebei Maya Poker Culture Co., Ltd Hebei      
Hefei City Yinlian Color Printing Co., Ltd Anhui
Heze Wanda Playing Card Co. Shandong
Jiangsu Santu Group Co., Ltd Jiangsu
KR Playing Cards Hong Kong
Kuo Kau Paper Products Co. Ltd. Taiwan
Legends Playing Card Company Hong Kong
Long-feng Groups Co. Ltd. Fujian
MeiJia international corp. Jiangsu
MPC Guangdong  
NingBo Three A Group Co., Ltd AAA    
SAC unknown    
SanRui Printing Co.
Shandong heze printing factory Shandong    
Shandong Hiyoung Printing Co., Ltd Shandong Kylin    
Shanghai cultural utensil company
Shanghai forest printing factory
Shanghai huakang drawing ruler factory
Shanghai nanhui printing factory
Shanghai playing cards factory Shanghai
Shanghai round world colour printing Co.
Shanghai Yuchen Playing Cards Industry Co., Ltd. Yaoji/Motor
Shanghai zhoupu printing factory
Shanxi Xin Jiang Zhongbei Printing Co., Ltd. no
Shenzhen Wangjing Paper Co., Ltd. Guandong WJ
Suzhou playing cards factory
(
? Suzhou Sunway Playing Card Factory)
Suzhou
Ta Chien Publishing Co., Ltd Taiwan
WaiYip Printing Factory Hong Kong
Wen Xian Printing&Production  Ltd Guandong
Wenzhou Yipintang Design & Printing Co., Ltd. link
Windmill Playing Cards Hong Kong
World Playing Cards Ltd Hong Kong    
Wuyi Yingxiang Color Printing Co., Ltd Yiwu    
Yali Guandong
Yiwu Playing Card Factory link
Yunnan Tongprint Co., Ltd. Yunnan
Zhejiang Langhua Poker co., ltd link
ZheJiang Wan Sheng Da Industry Co., Ltd WSD WSD
TongDa Printing Co., Ltd. Yiwu
East Playing Cards link    
unknown      
unknown      
unknown      
unknown
"Yan Huang" ?