QBB-50ml Coating Specific Gravity Cup's video
NBCHAOVIDEO238 plays · · 2018-03-19
PUSHEN QBB-50 Coating Specific Gravity Cup is a stainless steel Specific Gravity Cup, also known as Specific Gravity bottle. The volume of QBB-50 is 50ml, which complies with GBT21862 and ISO2811 standards.
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