Scientific and industrial material testing; non-destructive material testing

'destruct':8 'industri':3 'materi':4,9 'non':7 'non-destruct':6 'scientif':1 'test':5,10

Scientific surveying and checking apparatus and instruments, namely, ultrasonic testing devices for oil and gas pipeline inspection and ultrasonic testing devices for steel plate mills

'apparatus':5 'check':4 'devic':11,21 'gas':15 'inspect':17 'instrument':7 'mill':25 'name':8 'oil':13 'pipelin':16 'plate':24 'scientif':1 'steel':23 'survey':2 'test':10,20 'ultrason':9,19

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