PDI

Spanish label. May also appear as P.D.I.. Also credited as distributor and/or marketed by.
PDI acronym stands for "Producciones Discográficas Independientes".
Company credits mostly credited as PDI, S.A..
WARNING: On many PDI releases you can find before the catalogue number some letter that refer to the price code. You can add it on catalogue number field if it appears previously. Also you can add it to the Release Notes field as Price code.
Examples (incomplete list) :
A - 00.0000 = 7" price > El Último De La Fila - Cuando La Pobreza Entra Por La Puerta, El Amor Salta Por La Ventana
B - 00.0000 = 12" price > El Último De La Fila - A Veces Se Enciende
C - 00.0000 = album (LP / Cassette) half price > Daryl Hall & John Oates - Daryl Hall & John Oates
D - 00.0000 = Minialbum (LP / Cassette) > Pegasus (13) - Nuevos Encuentros
E - 00.0000 = album (LP / Cassette) full price > The Nightingales - Pigs On Purpose
F - 00.0000 = CD > The Fall - The Light User Syndrome
G - 00.0000 = CD (different price) > Petru Guelfucci - Corsica
H - 00.0000 = album (2xLP / 2xCassette) > Jordi Sabates / Carmen Bustamante / François Rabbath - A Través Del Mirall (Una Proposta Musical De Jordi Sabatés)
Q - 00.0000 = album (2xCD) > Jaume Sisa - El Més Galàctic
T - 00.0000 = Cassette compilation > Celia Cruz - ¡¡Assucarr!! - Lo Más Sabroso
X - 00.0000 = CD Reissue > Toy Dolls - Bare Faced Cheek

And the first 2 numbers after the letter of the catalog number are the format of the product.
Examples (incomplete list) :
10 = 7" > El Último De La Fila - Las Palabras Son Cansancio / Los Angeles No Tienen Helices
20 = 12" > Kirsty MacColl - A New England
30 = LP > Daryl Hall & John Oates - Daryl Hall & John Oates
40 = 2 x LP > Tete Montoliu - Al Palau
50 = Cassette > El Último De La Fila - Nueva Mezcla
60 = 2 x Cassette > Raven (6) - Live At The Inferno
70 = 7" single promo > The Monochrome Set - The Ruling Class
80 = various formats > Albert Pla - Aquí S'Acaba El Que Es Donava