20-inch and below can be taken on board size (size 115CM of international boarding) for one person to travel about 4 days. 20 inches for a man traveling about 7 days, 20 inch trolley case refers to the length and breadth of the three lengths of the trolley and not greater than 115cm, so the board chassis can be brought into the aircraft cabin. 20-inch trolley design is the most common size of 34 × 50 × 20cm, this trolley looks small and exquisite. 22 inches must be checked for a person traveling 7 to 10 days. 24 inches must be checked, for 2 people traveling about seven days. 24-inch trolley case refers to the length and breadth of the trolley and shall not be greater than three length 135cm, which is the standard size trolley boarding aircraft regulations. 24-inch trolley design is the most common size of 60 × width 38 × thickness 28cm, is the most used trolley, moderate its volume, can bloom items amount, not too much nor too little. 24-inch trolley trolley is the most common, is the most suitable trolley public use. 26 inches must be checked, for 2 people traveling about half a month. 28 inches must be checked for family travel by Hong Kong family shopping. 28-inch trolley refers trolley length and breadth and shall not exceed three lengths 158cm, which is 28-inch boarding trolley standard aviation trolley size. 28-inch trolley design is the most common sizes length 70 × width 48 × thickness of 30cm, is relatively large capacity trolley, and suitable for the annual rush of business personnel. 32 inches must be checked, with 28 inches, but only in the domestic and some Southeast Asian aviation large air box, such as traveling by car, then the 32-inch can capacity is unmatched, and in 2013 designed to produce 32-inch addition to Samsonite trolley (US) domestic only hundalee (Chinese) can produce such a large trolley case. The so-called aluminum box mainly refers to the aluminum alloy skeleton, ABS, MDF (MDF), plywood (plywood) as the panel to three, mouth bar, handle, locks and other accessories for the combination from the box, because it has a reasonable structure design, meticulous professional work, and load-bearing ability durable, nice features, now mostly foreign applications more, as in recent years, the rise of the domestic industry in particular factor ISO industry requirements, the pursuit of product packaging integrity during transport, aluminum box applications also increased. The main chassis using high quality aluminum extrusions, with rugged, beautiful appearance, good heat dissipation characteristics, widely used in beauty salons, tool set, jewelry watches, stage, equipment, instruments, electronics, communications, automation, sensors, smart cards, industrial control, precision machinery industries in Jiangsu large air box, the box is the ideal high-end instrumentation. How to choose a good quality, patient with high air box, please refer to the following table: comparison project high-quality products inferior products wood wood thickness of 12mm, five national standard plywood, damp deformation, good strength Shaanxi large air box, impact resistance. 9mm thickness only about 7mm, non-GB three boards, most of poplar wood, rot after damp deformation, strength is not good. Resistant to impact all aluminum aluminum oxide, aluminum edging width 35mm, thickness 2mm not all about aluminum oxide, aluminum edging width 30mm, thickness of about 1mm cushioning material all with new materials production of new cotton, good elasticity, shock effect reaches II level, multi-use EVA cotton. Sponge full with the old material production EVA, elastic good, more choice and EPE high foam. Hardware-plated hardware of all branded products, good work intensity, pumping hands with a 10mm diameter, multi-branded hardware plating process in the workshop, work intensity difference, pumping hands with 8MM products, wheels with 3.5-inch or 4-inch dual-bearing poly Grease wheel loads up to 150KG / or selection of strengthening performance load reach 200KG / over Liaoning large air box, wheel plate thickness of 4mm thick. A 3-inch small single bearing wheel or the use of PVC plate thickness of 2mm, load no more than 80KG / just below the bottom multi-use 15mm or 18mm more use of the entire board 9mm or 12mm plate rivet distance is usually about 200 at 100mm above the platen Process panels and boards generally use white latex adhesive, pressure 12-24 hours at a temperature of 100 degrees is not sparkling, not wrinkled panels and boards generally with yellow glue, laminated and non-laminated, may in strong light irradiation blistering, wrinkling regular service factory service for lifelong maintenance free warranty for one year or more family cottage without service, a quality problem can not be solved other precision workmanship, good hand, production lines, sealing Well, high accuracy, products can be used more than five years (touring nature of use) rough, hand-poor, poor sealing cottage, accuracy is poor, most products a year (touring of use) Shandong large air box, Shin-Packaging (certified), a large air box provided by Xiongxianshenhai packaging color Limited. Xiongxianshenhai packaging color Limited (www.shenhai6688.com) (www.shenhai6688.com) Hebei Baoding, plastic bags leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum to meet customer needs. Shin Hae leader in packaging with the staff warmly welcome all inquiries negotiations to create application-Packing better future.