derusting preservation projects
The company built in 2001, the province is the largest quartz sand supply plant. Dedicated to the natural quartz sand, water filtration sand, sand casting industry, oil fracturing sand. Main users: tap water sewage treatment works, derusting preservation projects.
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derusting preservation projects
防腐工程除锈
以上为机器翻译结果，长、整句建议使用 人工翻译 。