参考文献

Wanhua Chemical (Ningbo) Co., Ltd.; WANHUA CHEMICAL GROUP CO., LTD.; Chen, Changsheng; Li, Yuan; Zhao, Wenjuan; Cui, Hongyin; Hua, Weiqi Patent: US2014/142341 A1, 2014 ; Location in patent: Paragraph 0062; 0063; 0064 ;