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SHANGHAI BANLINE PIPELINE ENGINEERING TECHNOLOGY CO., LTD.
BOHLER SPECIAL STEELS (SHANGHAI) CO., LTD.
SINCHEM SILICA GEL CO.,LTD.
HUNAN BEILUOXIAO TECHNOLOGY CO., LTD.
GUANGDONG GUOHENG YOUHE ADVANCED MATERIALS CO., LTD.
LINGWE TECHNOLOGY CO.,LTD.
ZHENGZHOU ZHONGYUAN DRYING TECHNIQUE AND ENGINEERING CO., LTD.
ZHIYI SPECIALTY CHEMICALS CO., LTD.
HEBEI TANGNAI TECHNOLOGY CO.,LTD.
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