Whisk together the first seven ingredients (through crushed red pepper) in a small bowl. Set aside.Heat the sunflower oil in a wok or heavy-bottomed saute pan over medium-high heat. Just when the sunflower oil begins to shimmer, add the green beans and sauté, stirring constantly, until they begin to blacken in small spots, about 3 minutes. (Note: Be careful when adding the green beans to the pan, as they should sizzle and pop a bit if the oil is hot enough. This process should go very quickly, with the green beans retaining a bright green color, even though they will start to blacken a bit in spots.)Add the sauce to the pan, stirring to coat the green beans. Cook just until the sauce reduces slightly, about 2 minutes.Serve immediately, on their own, or over rice.