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  SILICONE BASED ANTIFOAMING-DEFOAMING AGENT DYGJXP
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  MEDIUM/HIGH TEMPERATURE FLUID LOSS ADDITIVE DYG80
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  MEDIUM / LOW TEMPERATURE FLUID LOSS ADDITIVE DYQG86
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  FRICTION REDUCER FOR CEMENTING DYF54L
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  HT- RETARDER DYGH48
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  DISPERSANT FRICTION REDUCER DYFSJ
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  FLUID LOSS CONTROL ADDITIVE DYGJ34S
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  MEDIUM / LOW TEMPERATURE FLUID LOSS ADDITIVE DYGJ35S
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  LATEX FOR OIL WELL CEMENTING CDR-S
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  LIGHT-WEIGHT ADDITIVE FOR OIL WELL CEMENT GP-55
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