https://uniisoind.en.made-in-china.com/product-group/dMOaVUhCrgrI/C131-1.html
C131 - Shanghai Uniiso Industries Co., Ltd. - page 1.
China C131 catalog of Heavy-Duty Cast Combination Chain for Efficient Grain Handling, Durable C132 Combination Transfer Cast Chain for Heavy Industry provided...
shanghaiindustriescoltd
https://dime.dot.ca.gov/index.php?r=site/testInstructions&material_type_id=5&test_method_id=33
DIME - Electronic Data Submittal for ASTM C131-1
electronic datadimesubmittalastm
https://www.astm.org/membership-participation/technical-committees/workitems/workitem-wk95867
WK95867 - Revision of C131/C131M-20 Standard Test Method for Resistance to Degradation of...
ASTM International - Standards Worldwide
https://www.star.nesdis.noaa.gov/pub/sod/lsa/rads/data/sw/a/c131/
https://www.star.nesdis.noaa.gov/pub/sod/lsa/rads/data/sw/a/c131/ - NOAA / NESDIS / STAR File Share
https://cy.ons.gov.uk/economy/inflationandpriceindices/timeseries/ewxx/ppi/previous
PPI INDEX IMPORT EU - C131 Textile yarn and thread 2015=100 - Office for National Statistics