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Pressure test: use 120-grit abrasive paper scraping on the back side of the lid for 15 times, then check after 24 hours,the lid should not be broken or cracked. Destructive testing: break the lid with hammer and check,the number of particles should be over 50pcs within the area of 50mm*50mm, and the biggest fragment should not over 3g. Salt fog test: Put the lid into the the frog of 5% Nacl with the PH at 7.0for 24 hours, unmovable rust is not allowed on the rim.
- About products and suppliers:
35,663 glass pot lid products are offered for sale by suppliers on Alibaba.com, of which cookware sets accounts for 25%, soup & stock pots accounts for 14%, and water pots & kettles accounts for 9%. A wide variety of glass pot lid options are available to you, such as sustainable, stocked, and portable. You can also choose from pp, polylactic acid, and melamine glass pot lid, as well as from lids, handles & knobs, and inserts glass pot lid There are 35,663 suppliers who sells glass pot lid on Alibaba.com, mainly located in Asia. The top countries of suppliers are China, India, and Hong Kong S.A.R., from which the percentage of glass pot lid supply is 98%, 1%, and 1% respectively.