Qingdao yongliyuan chemical industry co . , ltd . is a expert manufactroy of inorganic chemical combination production . our main productiong include bano3 , bacl2 , baso4 from powder to sand size 青岛永利源化工有限公司是生产无机化工产品的专业生产厂家,主要生产硝酸钡、氯化钡、重晶石粉、重晶石砂等。
Mica , vemiculite , quartz sand , colored grit , cobble , tourmaline , light calcium carbonate , feldspar , feldspar powder , marble , etc . 1 . the series of mica includes muscovite , golden mica , biotite , sericite , used in the fields of electric insulation , heat insulation , paint , plastic , rubber , electric welding , toiletry , etc . 精制石英砂粉,云母粉碎,轻质碳酸钙,重钙粉,蛭石块粉,以及长石粉,重晶石粉,硅线石,电气石,鹅卵石,等各种矿产品。
The joint british - afghan survey found significant deposits of natural gas , petroleum and coal ; copper , chromate , talc , barites , sulphur , gold , lead , zinc , iron ore and salt ; and precious and semi - precious stones including high - quality rubies , emeralds and much of the world ' s supply of lapis lazuli ( pictured ) 英阿联合勘测队发现了意义重大的天然气、石油和煤矿;铜、铬酸盐、石膏、重晶石、硫磺、金、铅、锌、铁和盐矿;富含高质量红宝石的宝石和亚宝石矿,以及世界上大多数的天青石资源(如图) 。