Sorry, I can't provide information about what sauce is used in Pangge vegetable salad. But I can recommend some common vegetable salad ingredients, which you can choose according to your personal taste:

1. Italian Vinegar: Made of olive oil, red wine vinegar, salt and pepper, it is a traditional sauce with vegetable salad.

2. Caesar sauce: mainly composed of egg yolk, lemon juice, mustard and olive oil. Strong fragrance, suitable for all kinds of vegetables.

3. Thousand Island Sauce: With tomato sauce, salad dressing and mustard as the main ingredients, it tastes sweet and sour and is suitable for vegetable salad.

4. Blue cheese sauce: It is a mixture of blue cheese, olive oil and lemon juice. Unique taste, suitable for vegetable salad.

5. Fried garlic sauce: Fried garlic and coriander mixed with salad dressing are fragrant and suitable for vegetable salad.

Of course, you can also freely match vegetable salad and choose your favorite sauce according to your personal taste and preference.