In a mixing bowl, combine oyster sauce, soy sauce, sugar, ground white pepper, sesame oil, and minced garlic. Add the fresh large shrimp and mix well. Let marinate for 20 minutes.

While the shrimp is marinating, cut spring roll wrappers into thirds and keep covered with a damp cloth.

Take a strip of wrapper, place a marinated shrimp at one end, roll tightly, and seal with beaten egg. Repeat until all shrimp are wrapped.

Heat oil in a deep frying pan to around 350°F (175°C).

Carefully add wrapped shrimp to hot oil without crowding. Fry for 2-3 minutes each side until golden brown.

Remove fried shrimp with a slotted spoon and drain on paper towels. Serve hot with sweet chili sauce.