Material Testing

Wood-based panel testing per GB/T 17657 — bending (MOR/MOE), internal bond, thickness swelling, screw-holding, and GB 18580 formaldehyde (new E0 ≤ 0.050 mg/m³ from 2026).

Granite testing

Granite testing per GB/T 9966 — compressive strength (dry/wet/freeze), flexural strength, water absorption, abrasion, thermal shock, and GB 6566 radioactivity class A/B/C.

Bearing steel testing

Bearing steel testing per GB/T 18254 / ISO 683-17 — non-metallic inclusion rating (GB/T 10561, quenched), carbide uniformity (banded/network/ledeburitic), and oxygen content.

Storage tank testing

Storage tank testing per API 650 / GB 50128 — water-fill with settlement observation, weld NDT (NB/T 47013), and in-service floor-plate survey per API 653 / EEMUA 159.

Outdoor jacket testing

Outdoor jacket testing per GB/T 32614-2023 — hydrostatic head (GB/T 4744), moisture-vapour transmission (GB/T 12704), spray rating (GB/T 4745), and wash durability.

Latex pillow testing

Latex pillow testing per GB/T 35457-2017 — indentation hardness and support ratio (GB/T 10807), compression permanent set (GB/T 10653), resilience, VOC, natural-rubber content.

Industrial fan testing

Industrial fan testing per ISO 5801 / GB/T 1236 / AMCA 210 — full fan curve (airflow, static pressure, efficiency), FEI energy index, noise (ISO 13347), and rotor balance.

Underwear testing

Underwear testing to GB/T 8878 / GB 18401 — formaldehyde, pH, banned amines, perspiration and saliva colorfastness, antibacterial (GB/T 20944), and GB 31701 infant safety.

Sportswear testing

Sportswear testing to FZ/T 74001 / GB/T 21295 — moisture wicking (GB/T 21655, AATCC 197-201), breathability, elastic recovery, UPF (GB/T 18830), and GB 18401 safety.

Towel testing

Towel testing per GB/T 22864 / GB/T 22871 — water absorbency (capillary rise, ASTM D4772, AATCC 79), pile loss, colorfastness, and GB 18401 Class A safety.

Cable testing

Circuit breaker type testing to IEC 60947-2 / GB/T 14048.2 — Icu, Ics, Icw, Icm, utilization category A/B, test sequences, and Annex F EMC for electronic releases.

Steel pipe testing

2026-07-06

Steel pipe testing verifies dimension, mechanical properties, weld NDT, hydrostatic pressure and sour-service HIC/SSC to API 5L, ASTM A106/A53 and NACE TM0284. Tested by Beijing ZKGX Research.

Down jacket testing

2026-07-06

Down jacket testing verifies fill power, down cluster content, oxygen number, turbidity, net fill weight and downproofness to IDFB, EN, GB/T 17685 and GB/T 14272-2021. Tested by Beijing ZKGX Research.

Foam plastic testing

2026-07-04

Foam plastic testing verifies density, compression, IFD, thermal conductivity and fire performance to ASTM D3574, D1621, C518 and FMVSS 302 / GB 8410. Tested by Beijing ZKGX Research.

Asynchronous motor testing

2026-07-04

Asynchronous motor testing verifies IE efficiency, insulation, vibration and rotor cage to IEC 60034-2-1, IEEE 112, GB/T 1032 and ISO 20816-3. Beijing ZKGX Research tests motors.

Rolling bearing testing

2026-07-04

Rolling element bearing on a laboratory test bench with an FFT vibration spectrum display, for rolling bearing testing to ISO 281 and ISO 15242.

Copper strip testing

2026-07-03

Copper strip corrosion testing (GB/T 5096 / ASTM D130 / ISO 2160): detects active sulfur in petroleum products that corrodes copper — not total sulfur. Polished strip immersed, rated 1a–4b on 13-standard colour board — Beijing ZKGX.

VOC Testing

2026-07-03

VOC testing across three questions: GB 50325-2020 (indoor air, TVOC ≤0.45 mg/m³) and GB/T 18883-2022, plus GB 18581/18582 coatings content — thermal-desorption GC-MS, GC-FID, DNPH-HPLC — Beijing ZKGX

Plush toy testing

2026-07-03

Plush toy testing: GB/T 9832-2026 (product, adding formaldehyde/pH/colorfastness/odor, replacing 2007) layered on GB 6675.1-4-2014 (mandatory toy safety: small parts, flammability, heavy metals) — Beijing ZKGX

Cardboard Testing

2026-07-02

Corrugated cardboard and box testing: GB/T 6544 (board) + GB/T 6543-2008/2025 (box), with the GB/T method standards for ECT (6546), burst (6545), ply adhesion (6548), FCT, BCT — Beijing ZKGX.

Carbon steel testing

2026-07-01

Carbon steel testing: GB/T 700 (Q235) and GB/T 1591-2018 (Q355, replacing Q345) product standards mapped to GB/T 228.1/229/4336 method standards — Beijing ZKGX.

Wood testing

2026-06-30

Wood testing: solid/structural wood to GB/T 1927 + GB 50005, and wood-based panels to GB 18580-2025 (new mandatory E0) + GB/T 17657 — Beijing ZKGX Research.

Vial Testing

2026-06-29

Pharmaceutical vial container-closure testing: USP <382> fragmentation/penetration/sealability, USP <1207> CCI (vacuum decay/HVLD/helium), and YBB glass body.

Shackle Testing

2026-06-26

Shackle testing to ASME B30.26, GB/T 25854 and ISO 2415: proof load (~2× WLL), 4:1/6:1 design factor, side-load reduction, removal criteria and soft-shackle data.

Anti-Static Rack Testing Explained

2026-06-26

Anti-static rack testing to ANSI/ESD S20.20, STM4.1/7.1 and SJ/T 10694: surface resistance (10⁶–10⁹ Ω), resistance-to-ground through casters, and 6-month verification.