Chemical test paper, pH value measurement indicators made of paper; chemical test kits for determining the integrity of coatings on hard surfaces in the nature of concrete, metal, glass and wood for industrial use; chemical indicators in the form of strips, films and liquids used to indicate damage to hard surfaces in the nature of concrete, metal and wood; water quality test kits containing reagent bearing hardness test trips, calibration solution, and pH value measurement indicators made of paper

'bear':66 'calibr':70 'chemic':1,11,35 'coat':19 'concret':27,56 'contain':64 'damag':48 'determin':15 'film':42 'form':39 'glass':29 'hard':21,50,67 'indic':7,36,47,76 'industri':33 'integr':17 'kit':13,63 'liquid':44 'made':8,77 'measur':6,75 'metal':28,57 'natur':25,54 'paper':3,10,79 'ph':4,73 'qualiti':61 'reagent':65 'solut':71 'strip':41 'surfac':22,51 'test':2,12,62,68 'trip':69 'use':34,45 'valu':5,74 'water':60 'wood':31,59

'anti':2 'anti-corros':1 'coat':4 'corros':3

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