Quality Control
Precision Testing & Total Quality Management (TQM)
At TYH Container Enterprise Co., Ltd., quality is integrated into every stage of the manufacturing process. In accordance with international quality management standards, we have established a comprehensive quality control system to ensure product consistency, functionality, and reliability.
To support precise inspection and testing, TYH utilizes a range of professional measuring and testing equipment, including vacuum leak detectors, tensile testers, torque testers, height gauges, vernier calipers, and other quality assurance instruments. Different inspection methods are applied according to each product category to verify dimensional accuracy, assembly performance, sealing integrity, and functional requirements.
Our quality control process covers incoming materials, in-process inspections, first article inspections, production line self-inspections, random sampling inspections, finished goods inspections, and pre-shipment quality verification. Critical production stages are closely monitored to ensure product compatibility, dispensing performance, color consistency, transparency, and overall appearance meet customer specifications.
TYH follows 5S manufacturing principles throughout production operations to maintain a clean, organized, and efficient working environment. Combined with ISO-based quality management procedures, our team continuously works to improve production efficiency, reduce defects, and deliver reliable cosmetic packaging solutions that meet the expectations of global beauty and personal care brands.
Height Gauge
Height gauges are used to measure bottle neck dimensions, depth, and overall height to ensure compatibility with pumps, caps, and other packaging components.
Vernier Caliper
Vernier calipers are used to measure internal diameter, external diameter, length, depth, and other critical dimensions of packaging components.
Feeler Gauge
Feeler gauges are used to accurately measure clearance gaps between adjacent components.
Vacuum Leak Tester
Vacuum leak testers are used to verify the sealing integrity of packaging components and detect potential air leakage.
Vacuum Pressure Test Standards:
Packaging Type:
Rigid Bottles (PET / PETG): 600 mmHg / 3 min
Flexible Bottles (PE): 360 mmHg / 3 min
Magnifier
Magnifiers are used to inspect surface details and identify cosmetic defects or appearance irregularities.
Electronic Scale
Electronic scales are used to measure product weight with a precision range from 0.01g to 300g.
Altimeters
Altimeters measure neck size of bottles to fit the pumps and deepness, height.
Vernier caliper
Vernier caliper measure the inner, outer diameter, length and deepness of the product.
Feeler gauges
Feeler gauges are used for measuring gap widths two objects that are close together.
Torque testers
Torque testers are used to measure the maximum torque of opening and closing the caps.
Vacuum leak detector
Vacuum leak detector is used for detecting air leaking, heat resistance testing.
Tensile testers
Tensile testers are used for measuring the strength of caps and other components.
Magnifiers
Magnifiers are used to enlarge the size of images to vision check if there is any defect.
Electronic scales
Electronic scales are used to weigh the products (0.01g-300g).