Manufacture of school , camping, outdoor, travel, business, tool, leisure and fashion , sports, soft luggage etc. |Certified by BSCI, SEDEX,♻ROHS | Since 1993. |Quality Standard ISO9001
AUTOMATIC MACHINE CONTROL THE PRODUCTION
◆Lean production lines
◆Sangely smart system
◆Automatic transfer material
RAW MATERIALS TEST SECTION
Guide to Fabric Types:Cordura fabric extremely durable, tear resistant and heavy-duty. All Cordura fabrics are treated with a polyurethane coating on the back and a water-repellent finish on the front, making these all-weather fabrics a great choice for outdoor adventuring.
We have our own internal QC dept with multiple testing machines to perform QC and spot checks at your request. Tensile Strength testing, Zipper durability, Material Stress Testing, and many other tests are available to you.Inspection process(Standard AQL2.0) :Material Vendor Assessed--Incoming Materials Inspected --In-process QC 100% check(Semi--Finished)--Final QA check--Packing--Delivery ensure the goods all are perfect and provide full sets of inspeciton report to you.
PHYSICAL TEST ITEM
◆Color fastness to rub
◆Handle or shoulder strap resistance
◆Salt spray test for metal parts
◆Low temperature test for plastic parts
◆Wheel travel resistance
◆Aging or burn-in test
Advantages and disadvantages of trolley backpacks
Nowadays, students are under overwhelming schoolwork pressure, and the weight of schoolbags is getting heavier and heavier because of the increase of various homework. Especially for primary school students, their schoolbag not light for an adult. In order to reduce students’ schoolbag weight, the trolley backpack comes into existence. Then, we will talk about the advantages and disadvantages of these trolley backpacks.
Benefits of trolleys backpacks
we can not deny that the trolley backpack do solve the problem of heavy schoolbag to primary students. Some are detachable, so you can take the trolley backpack as an ordinary backpacks also. It brings convenience to them to a great extent. Besides, the quality of trolley backpack is generally great. It is water-proof and not easy to deform. It is solid and durable. The service life usually is around 3-5 years.
Disadvantages of trolleys backpacks
Now, the trolley schoolbag has become popular among many primary school students. Compared with the traditional backpack, the trolley schoolbag is easier to use. Parents buy it for the sake of saving physical strength for their children. However, if a child drags a heavy backpack with one hand for a long time, the impact on the spine cannot be ruled out.
If a child uses a backpack with a trolley backpack for a long time every day, postural scoliosis can occur. However, the time of using the trolley bag every day is limited. On the contrary, some bad habits of children in reading, writing and playing computer are more likely to lead to the occurrence of postural scoliosis, such as reading with the chin on the side and writing on the side.
Because children are in the growth period, bone plasticity is strong, and the spine is soft, long-term oppression is easy to deformation. For example, long-term carrying single-shoulder schoolbag or fixed using one hand with the trolley schoolbag will make people's body lean forward, the stress position of the spine is lateral, may lead to hunchback, collapse, postural scoliosis, etc.
Compared with the trolley backpacks, primary students had better use backpacks. The backpack can spread force on both shoulder, it can also lighten weight and protect students from high and low shoulder.
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