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National Roofing Contractor's Association

Rosemont, 美国 中的 社区服务/非营利机构
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Since 1886, the National Roofing Contractors Association has been the home for generations of entrepreneurial craftsmen and …

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常见问题解答

问:
What is the NRCA CERTA program?
答:
CERTA is for roofing workers who want to be trained in safely applying torch-related roofing products. Trainees must successfully complete a registered CERTA training session conducted by an …
答:
CERTA is for roofing workers who want to be trained in safely applying torch-related roofing products. Trainees must successfully complete a registered CERTA training session conducted by an authorized...
答:
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