The GB 21027-2007 "General Safety Requirements for Student Supplies" standard is the first national standard implemented in China regarding student supplies. It specifies the safety requirements, test methods, inspection rules, labeling, and instructions for use of student supplies. GB 21027-2007 is applicable to watercolor pigments, crayons, oil painting sticks, finger paint pigments, rubber putty, correction products, adhesives, watercolor pens, writing pens, marker pens, drawing rulers, books, backpacks, pen bags, hand scissors, stationery boxes, rolling pens, and other student supplies used by underage students. The relevant element limit requirements are as follows:

Other requirements: 1) The organic solvent benzene content in the modified product (correction solution, correction tape, correction pen) should not exceed 10mg/kg and should not contain chlorinated hydrocarbons; 2) The formaldehyde content in the fabrics and accessories used in backpacks and pencil cases shall not exceed 300mg/kg; 3) The dyes used in student supplies should comply with the requirements of GB 19601-2004; 4) The brightness (whiteness) of this volume should not exceed 85%. 5) Pen cap safety: The cap of writing pens, marker pens, correction pens, and watercolor pens should at least meet the three requirements of cap size, cap ventilation area, and cap air circulation. 6) Edge, tip: A: Hand scissors, the tip of the blade should be an arc tip, not a sharp tip. B: If manual scissors, pencil sharpeners, etc. have functional sharp edges and sharp tips due to their essential functionality, warning instructions should be set up, and there should be no other non functional sharp edges or tips. C: The accessible edges, corners, and parting lines of drawing rulers, stationery boxes, etc. should not have sharp burrs, tips, or overflow edges, or be protected from contact. D: Student supplies can touch metal edges, including holes or edges, and should not have dangerous burrs or thin edges, or be folded, rolled, or curved, or protected with protective parts or coatings. E: The accessible ends of exposed bolts or threaded rods should not have exposed sharp edges or burrs, or their ends should be covered with smooth nuts, so that sharp edges and burrs are not accessible. Test cycle: 5 working days Sample preparation quantity: specific. Testing cost: Depending on the project (by phone or in person)

Function of testing report:

1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report

2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms

3. Used as a sales report: issuing legally effective testing reports to make consumers more confident

4. Papers and research: Provide professional personalized testing needs

5. Judicial services: providing scientific, fair, and accurate testing data

6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problems

100% inspection and testing process:

1. Telephone communication and confirmation of requirements

2. Recommend solutions and confirm quotations

3. Mail samples and arrange testing

4. Progress tracking and result feedback

5. Provide reports and after-sales service

6. If urgent or priority processing is required

Testing and testing characteristics:

1. The testing industry is fully covered, meeting different testing needs

2. Fully cover the laboratory and allocate localized testing nearby

3. Engineers provide one-on-one services to make testing more accurate

4. Free initial testing, with no testing fees charged

5. Self service order delivery for free on-site sampling

6. Short cycle, low cost, and attentive service

7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc

8. The testing report is authoritative and effective, and is generally used in China