Jianzhi Group solemnly promises to return a double-standard through-hole award to 500 yuan

From May 1, 2014, Hebei Jianzhi Casting Group solemnly promised the market: "Return a double-standard through hole piece to reward 500 yuan".

(Note: English mark. Other waste products reward 200 yuan. Waste parts identification standard: reasonable installation and testing, water leakage is waste parts)