On steel surface which is removed rust by sand blasting spray, and can be applied on steel surface which is removed rust by hand or machine tools.
它既可用于喷砂除锈的金属表面，亦可用于手工或小型风动工具除锈的金属表面。
On steel surface which is removed rust by sand blasting spray, and can be applied on steel surface which is removed rust by hand or machine tools.
它既可用于喷砂除锈的金属表面，亦可用于手工或小型风动工具除锈的金属表面。
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