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Book Description paperback. Condition: New. Language:Chinese.Pages Number: 1 To help employees in construction enterprises to comprehensively improve the overall quality to meet the current vocational training and technical workers work test evidence of need. we according to the Ministry of Construction. Ministry of Labour and Social Security s National Occupational Standards. . carefully planned. produced. published The national vocational qualification training course. national vocational qualification training series to teach skills. Seller Inventory # J87435