To identify the quality of shoes, we need to focus on both appearance and internal indicators. Since the internal indicators often need to rely on testing instruments, for a consumer, it is more practical to identify the quality of shoes from their appearance. From the appearance, the quality of the shoes is mainly judged by the quality and workmanship of the materials (including the upper, the sole, and the lining) of the shoes.

The size can be measured, and the craftsmanship is mainly based on visual inspection, hand touch, pinching and pushing. Quality inspection agencies all over the country can test, and you can call Baijian for the specific cost. If you return the goods, Taobao must show evidence. If you can clearly see it, you can take a picture and send it. If there is an internal quality problem, you must go to test to prove that there is a problem.

Footwear testing standard：

1. Damage: 1. Whether the toe cap, the outer side of the middle help, and the front eye protection display surface of the finished shoe are damaged; 2. The inner side of the middle help, etc., and the non-display surface, should not be damaged with an area of more than 2 square millimeters; 3. The back neckline, The tongue should not be damaged; 4. The sewing machine should not have a broken place, and the tongue label should not be damaged; 5. The outsole is damaged and lacks material, and the length exceeds 1mm and the width is 1.5mm unqualified; 6. The shoelace is damaged and unqualified.

2. Firmness: 1. The tongue of the shoe must be fixed firmly and must not fall off; 2. The webbing must be fixed firmly and must not fall off; 3. The drop plastic, trademark, and letters must not fall off; Transfer or cloth scale size, must not fall off 6, the parts of the car line should not fall off; 7, the metal buckle is broken and deformed, loose, no bottom buckle, the paint is not qualified; 8, the plastic drop buckle is not strong, easy to break, Unqualified; 9, the outsole label connection is not strong and unqualified; 10, the sole combination is not strong and the delamination is unqualified.

3. Glue opening: 1. The finished shoe does not have a length of over 2mm and a depth of over 1.5mm, only the glued opening area; 2. The outsole and the upper surface are firmly bonded, without cracks and voids; 3. The tensile test is 2.5 kg / Above per square cm.

Four, size: 1, the left and right feet are the same size; 2, the actual size (length) of the shoes is the same, the size of the lining and the midsole is the same.

Five, sewing thread: 1. Any part, the sewing machine is unqualified, and the bottom thread is unqualified; 2. The sewing machine is unqualified when the needle is dropped; 3. Double-needle wiring, heavy needles, cross-threading, serious uneven line spacing, unevenness and poor flow Qualified; 4. The stressed part, the bottom thread of the main components, is generally too loose, and the upper thread is unqualified; 5. The margin and stitch distance are seriously uneven, the line is not smooth, which seriously affects the appearance, and is unqualified; 6. The car line is left and right The color of the feet is wrong, and the single needle and double needle thread are not qualified.

Six, chromatic aberration: 1. Symmetrical part of a single upper side, symmetrical part of the left and right feet of the whole pair of shoes, no chromatic aberration; 2. No chromatic aberration between the left and right feet of the outsole. Color difference; 3. Accessories, such as trademarks, ribbons, plastic drops, electro-rust, high frequency, and printing are not allowed to have serious color differences.