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safety helmet with communication function patent certificate
safety helmet with communicat
concrete-mixer feeding device patent certificate
concrete-mixer feeding device
Pipeline fixing clamp patent certificate
Pipeline fixing clamp patent
hung type safety belt
hung type safety belt
single-plate air compressor
single-plate air compressor
Window installation and adjustment device patent certificate
Window installation and adjus
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Haimen Longxin Homeland
Shanghai Renjie Hebin Garden
Shanghai Renjie Hebin Garden
Shanghai Qingpu Yulan Bay
Shanghai Qingpu Yulan Bay
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