Triangle records was a bootleg recording

Bootleg recording

A bootleg recording is an audio or video recording of a performance that was not officially released by the artist or under other legal authority. The process of making and distributing such recordings is known as bootlegging...

 company.
It ran out of business in 1998.
Records stocks and corporate office were located in Singapore

Singapore

Singapore , officially the Republic of Singapore, is a Southeast Asian city-state off the southern tip of the Malay Peninsula, north of the equator. An island country made up of 63 islands, it is separated from Malaysia by the Straits of Johor to its north and from Indonesia's Riau Islands by the...

, while graphic department was located in France

France

The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

. European distribution was located in Russia

Russia

Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

. There was no proper American distribution.
Triangle records catalog was mostly composed of live recordings and b'sides compilations of punk and metal bands. Live sources consisted of soundboard and audience recordings.

Today the label survives in spirit by the work of a remasterer living in FRANCE aka Texas Barbudos sharing music for free and worldknown for the high quality of his remastered bootlegs.
Most time based on soundboard recording or high quality audience recordings.
Artists covered are now more bluesy like ZZ Top, Popa CHUBBY and many more.

You can find some records on guitar 101 forums under the label TRIANGLE RECORDS FRANCE.
Latest releases are Robert PLANT, Anna CALVI, Roky ERICKSON...

Among the artists featured were:

Metallica

Metallica

Metallica is an American heavy metal band from Los Angeles, California. Formed in 1981 when James Hetfield responded to an advertisement that drummer Lars Ulrich had posted in a local newspaper. The current line-up features long-time lead guitarist Kirk Hammett and bassist Robert Trujillo ...

The Offspring

The Offspring

The Offspring is an American punk rock band from Huntington Beach, California, formed in 1984. Known as Manic Subsidal until 1986, the band consists of lead vocalist and rhythm guitarist Dexter Holland, lead guitarist Kevin "Noodles" Wasserman, bassist Greg K. and drummer Pete Parada...

Nofx

NOFX

NOFX is an American punk rock band from Los Angeles, California .The band was formed in 1983 by vocalist/bassist Fat Mike and guitarist Eric Melvin. Drummer Erik Sandin joined NOFX shortly after. In 1991 El Hefe joined to play lead guitar and trumpet, rounding out the current line-up...

Deftones

Deftones

Deftones are an American alternative metal band from Sacramento, California, founded in 1988. The band consists of Chino Moreno , Stephen Carpenter , Chi Cheng , Frank Delgado , and Abe Cunningham . Currently Sergio Vega is standing in on bass while Cheng recovers from a car accident...

Korn

Korn

Korn is an American nu metal band from Bakersfield, California, formed in 1993. The current band line up includes four members: Jonathan Davis, James "Munky" Shaffer, Reginald "Fieldy" Arvizu, and Ray Luzier. The band was formed as an expansion of L.A.P.D.The band released their first demo album,...