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letter of appointment
Contract abiding and trustworthy enterprise
High tech Enterprise Certificate
Excellent Enterprise
The member unit of Shandong Construction Machinery Association
Member Unit of Shandong Aluminum Alloy Technology Standard Innovation Base
Top 10 Member Enterprises
Leading enterprises in the building doors and windows and curtain walls industry in Shandong Province
Benchmark enterprise for point based management
High-tech Enterprise
One enterprise, one technology center
hidden champion
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