Heres what you need. Just add your other options to the code

Private Sub CommandButton1_Click()
On Error GoTo oeps
With Sheets(Left(Trim(TextBox1), 1))
    r = Application.Match((Trim(TextBox1)), .Range("A:A"), 0)
    TextBox1 = .Range("A" & r)
    TextBox2 = .Range("B" & r)
    TextBox3 = .Range("C" & r)
    TextBox4 = .Range("D" & r)
    TextBox5 = .Range("E" & r)
    TextBox6 = .Range("F" & r)
    TextBox7 = .Range("G" & r)
    TextBox8 = .Range("I" & r)
    TextBox9 = .Range("K" & r)
    Select Case .Range("L" & r).Value
        Case Is = "T-shirt"
            Me.CheckBox1.Value = True
            Me.CheckBox2.Value = False
            Me.CheckBox3.Value = False
            Me.CheckBox4.Value = False
        Case Is = "T-shirt/Calendar/Others"
            Me.CheckBox1.Value = True
            Me.CheckBox2.Value = True
            Me.CheckBox3.Value = False
            Me.CheckBox4.Value = True
    End Select
End With

Exit Sub
oeps:
MsgBox "No match with" & Chr(13) & Chr(13) & "Company-ID    " & TextBox1
End Sub