อยากได้อะไหล่ แต่ไม่รู้จะซื้อที่ไหน

ไม่ทราบว่าพอจะแนะนำที่ซื้ออะไหล่พวกนี้ไหมครับ เพื่อนผมจากตปท เขาฝากซื้อผมก็ไม่ค่อยเข้าใจว่ามันคืออะไร

No.     Description      Model / Type     Range    qty     Company
1    Pressure Switch    BWX-DO    0~250 Bar,Proof 300 Bar,1A- 125 VAC, 0.5A- 24 VDC    2    CELLA
2    Pressure Switch    BWX-DS    0~2.5 Bar,Proof 4.5 Bar,15A- 220 VAC, 2A- 24 VDC    2    CELLA
3    Pressure Switch    BWX-DS    0~16 Bar,Proof 30 Bar,15A- 220 VAC, 2A- 24 VDC    2    CELLA
4    Pressure Switch    BAUN    0~40 Bar,Proof 75 Bar,15A- 220 VAC, 2A- 24 VDC    2    CELLA
5    Pressure Switch    BAUN    0~100 Bar,Proof 160 Bar,15A- 220 VAC, 2A- 24 VDC    2    CELLA
6    Pressure Switch    BAUN    0~16 Bar,Proof 30 Bar,15A- 220 VAC, 2A- 24 VDC    2    CELLA
7    Pressure Switch    BAUN    0~6 Bar,Proof 12 Bar,15A- 220 VAC, 2A- 24 VDC    2    CELLA
8    Pressure Switch    MAXXUN    0~6 Bar,Proof 100 Bar,15A- 220 VAC, 2A- 24 VDC    2    CELLA
9    Pressure Switch    DA100UN    0~4 Bar,Proof 100 Bar,15A- 220 VAC, 2A- 24 VDC    2    CELLA
10    Pressure Switch    MABXXUN    0~1000 mmH2O,Proof 6000 mmH2O,15A- 220 VAC,   2A- 24 VDC    2    CELLA
11    Thermocouple Disc cavity 2nd row    TCK  Dis. 4211T99001 Model: TSPC 9028WMA, order No. 3211071056008215    type: k    3    Endress-Hauser
12    Thermocouple Disc cavity 3rd row    TCK  Dis. 4211T99002 Model: TSPC 9028WMB, order No. 3211071056008215    type: k    3    Endress-Hauser
-Transducer Temposonic GT3-0100M-D60-1 A1  quantity=1                    
-Transducer Temposonic GT3-02100M-D60-1 A2  quantity=1                    
-Transducer Temposonic GT3-005M-D60-1 A3  quantity=1                    
-Samson Electropneumatic Positioner 3731-3 part number: SA-3731-1  quantity=1                    


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