Raschig Rings purchasing request from Pakistan

1- RASCHIG RING (BLACK HOLLOW RING)
MATERIAL: CARBON (GRATER THEN OR EQUAL TO 99%)
SIZE: OD= 19.05mm ID=3/4”,
WALL THICKNESS: 4.24mm ≈ 5.5mm,
LENGTH: 19.05mm
Min. CRUSSING STRENGTH (LBS): 23,
FREE SPCAE: 61%
LOSS BY ALKALI TREATMENT (%) = 0.1 TO 0.2@ (60°C &24HRS, 2% NAOH SOL),
SUITABLE FOR ALL KINDS OF ALKALI AND ACID ENVIORMENT,
LIFE TIME YEAR: GREATER THEN OR EQUAL TO 2YEARS
(LONG USEFUL LIFE)
QUANTITY: 2.150 M3
2- RASCHIG RING (BLCK HOLLOW RING)
MATERIAL: CARBON (GRATER THEN OR