..............page:31-32+36
..............page:18-21+27
..............page:48-49+52
yan chang jian she ru he xuan zhi
WANG Jun-hua1;YE Zhao-you2;YANG Yan-ying2;JIAO Hai-zhen3 Co.;Ltd.;Yexian;Henan 467200;China;3.China Salt Haolong Salt Chemical Co.;Ltd;Pingdingshan;Henan 467001;China)
..............page:42-44