FR-4
FR-4 (or FR4) is a NEMA grade designation for glass-reinforced epoxy laminate material. FR-4 is a composite material composed of woven fiberglass cloth with an epoxy resin binder that is flame resistant (self-extinguishing). "FR" stands for "flame retardant", and does not denote that the material complies with the standard UL94V-0 unless testing is performed to UL 94, Vertical Flame testing in Section 8 at a compliant lab. The designation FR-4 was created by NEMA in 1968. FR-4 glass epoxy is a popular and versatile high-pressure thermoset plastic laminate grade with good strength to weight ratios. With near zero water absorption, FR-4 is most commonly used as an electrical insulator possessing considerable mechanical strength. The material is known to retain its high mechanical values and electrical insulating qualities in both dry and humid conditions. These attributes, along with good fabrication characteristics, lend utility to this grade for a wide variety of electrical and mechanical applications. Grade designations for glass epoxy laminates are: G-10, G-11, FR-4, FR-5 and FR-6. Of these, FR-4 is the grade most widely in use today. G-10, the predecessor to FR-4, lacks FR-4's self-extinguishing flammability characteristics. Hence, FR-4 has sincewhen? replaced G-10 in most applications.
The Urban Dictionary Mug
I love seeing new products, this one is awesome!
It's a very good idea and I'm so glad ☺
Veryfast ship in todays world...nice quality mug....will be buying more
Gave it to my uncle and he rewarded me with a wet kiss. Best gift ever!
mug gud, got it for my gf but mug just made her pregananant. Help pliz mug says its going after my thicc mum next. pliz send help
I love the personalized mug I got from you! I never thought there were mugs available like the one I got and it's going to make the BEST holiday gift! Thank-you!!
My friend and I added a word ! Gotta get merch of it now. Thanks for the coffee mug!
Easy to order quality mug.
It’s cute and wasn’t broken when it shipped. Just smaller than expected
I got it in the mail. then The next day it was sleeping with My non Existant Gf
I thought this mug was a bear.
it is pretty good but not all of it describes me god bless all Nevaeh's
i love it i love this mug my boyfriend got this for me as a gift i love it very much i highly recommend this for you or a loved one it is very good i am planning to get my mans one on his birthday i hope he will love it thanks guys for listening
EEEEEEEEEEEEEHHAAAAAAAAAAAAAA :))))))))
This was a phrase my husband and I made up even we first started dating. We laughed so hard while submitting it. The mug is perfect!
Urban Dictionary. Mixes truth with lies. Keeps a record. Thanks for the truthful parts, bro. 🙏💪✝️
I wish I had this mug I SOOOO wish I had this mug! I never find anything that has my name on it unless I have it custom made. I'm actually quite surprised that 'Lani' is on the Urban Dictionary... And the definition is pretty accurate ;)
really awesome mug I gave this mug as a secret Santa gift and and my cousin still uses it to this day. It is truly a awesome mug and it deserves 5 stars.
i shit in it
I cumed in my pants when it arrived in the mail. no more porn, just mug
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