internal coating meaning in English

内防护
内涂层

Hygienic standard for internal coating of food cans
食品罐头内壁脱模涂料卫生标准
Internal coating of line pipe for non - corrosive transmission service
防腐蚀性气体输送用管线管内涂层
Technical standard of liquid epoxy internal coating for steel tank
钢制储罐液体环氧涂料内防腐层技术标准
Technical standard of liquid epoxy internal coating for steel pipeline
钢质管道液体环氧涂料内防腐层技术标准
Hygienic standard for water soluble epoxy internal coatings of beverage cans
水基改性环氧易拉罐内壁涂料卫生标准

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