本公司产品通过了省级技术鉴定，并接受上海紧固件和焊接材料技术研究所的监制。
Our products passed the provincial technological appraisal. The production is supervised by Shanghai Fasteners and Welding Materials Technology Institute.
本公司产品通过了省级技术鉴定，并接受上海紧固件和焊接材料技术研究所的监制。
Our products passed the provincial technological appraisal. The production is supervised by Shanghai Fasteners and Welding Materials Technology Institute.
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