PLC自问世以来，经过40多年的发展，在美、德、日等工业发达国家已成为重要的产业之一。世界总销售额不断上升、生产厂家不断涌现、品种不断翻新。产量产值大幅度上升而价格则不断下降。
目前，世界上有200多个厂家生产PLC，较有名的：美国：AB通用电气、莫迪康公司；日本：三菱、富士、欧姆龙、松下电工等；德国：西门子公司；法国：TE 施耐德公司；韩国：三星、LG公司等。
Giddings & Lewis 65 Series VTL Parts Manual
GIDDINGS & LEWIS M.1300.7655 NSFP M13007655
GIDDINGS & LEWIS 502-02814-16 DC Input
G&L Giddings & Lewis 800 502-02882-00 CNC Terminator
Giddings and Lewis Servo Interface 501-03882-00 G&L CNC
Giddings and Lewis Valve Driver Board CNC 501-02960-00
G&L Giddings & Lewis 502-02824-00 MPX TRIAC BD
Giddings & Lewis Parts Manual for Upright Drills:
Giddings & Lewis Hydraulic Clamp HFI Fixture 503-25984
Giddings Lewis G&L 100C Winslow Drill Grinder Manual
GIDDINGS & LEWIS FS054593-0107 MICROSCAN BOARD
Giddings & Lewis 5010302550 5020273750 MPX Diode Board
Giddings & Lewis Monitor Scan Module 502-02906-00 -DI-
Giddings & Lewis AC Input Card 502-02959-00 -DI-
Giddings/Lewis 986-15VF NumeriCenter Repair Part Manual
EK-402 GIDDINGS & LEWIS FS054593-0105 X-AXIS CPU MODULE
GIDDINGS & LEWIS T3232-BS509-4FT NSFP T3232BS5094FT
GIDDINGS & LEWIS SCAN MONITOR 502 02906 00 (651)
Giddings & Lewis Mdl E 3″&4″ Table Type Operate Manual
Giddings & Lewis Mdl E 3″&4″ Table Type Program Manual
Bussman FRS-R-60, Qty 9, Giddings & Lewis 501-91794-03
Giddings & Lewis PICO-101 / PiC0-101 Input Module *LNC*
