Main testing standards for raw materials
　　
Typically, the vast majority of plastic toys produced around the world are made of several plastic materials, such as high and low density polyethylene (LDPE, HDPE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS, ABS), polycarbonate (PC) and polyester (PET).

All of these ingredients are multifunctional materials used to make toys because plastic is almost indestructible, easy to clean and can last for years. However, despite this, some plastic materials may contain harmful chemicals, making them unsafe and unsuitable for your children’s toys. Therefore, all raw materials must follow strict guidelines.
　　
　　Toy quality inspection
　　
AQI Services provide inspection services for toys and entertainment products at all stages: from supplier surveys and audits to in-process inspections, final inspections and final delivery of toys, including children’s and baby toys, entertainment products and electric toys.
　　
AQI’s quality experts understand customer requirements, ensure that on-site inspections are carried out correctly on site, and ultimately determine clear reports that explain and interpret all details.
　　
During the entire quality control process, we will verify the appearance quality, specifications, functions, and reliability of the toy.
　　
During the inspection process, inspectors discovered various defects by inspecting the product’s packaging, signs, labels, instructions, accessories, bar codes, functions, appearance/appearance, etc.
　　
Physical testing and durability
　　
For example, the physical properties of a teddy bear and a set of bunk beds are completely different, which means additional testing is needed. Therefore, ASTM standards will be applied based on product type. Physical testing is performed under different environmental conditions, such as:
　　
weather regulation
　　
stability test
　　
strength test
　　
durability test
　　
Tensile testing is used to determine how much force a material can withstand before breaking. It is also used to ensure that the raw materials used in product production are made of satisfactory materials that meet at least the minimum requirements before use, or if not, the raw materials must be found. Because in the end, if inferior raw materials are used, the final product will not be able to meet the expected correct stretching standards, which is not overall good, resulting in a poor reputation of the company and poor customer relations.
　　
Universal testing machine is used to test tensile strength. It usually uses hydraulic cylinders to generate the required force. The machine recognizes the following attributes in the product:
　　
Comprehensive product strength
　　
product elasticity
　　
Ductility-The degree of “softness” or extensibility of the material.
　　
rigid
　　
Ductility-The property of a metal that deforms under compression and takes on a new shape.
　　
Elastic modulus-The maximum energy absorbed per unit volume without permanent deformation.
　　
Modulus of toughness-the amount of strain that a material can absorb before breaking.
　　
The testing company will also test the material for scratch resistance and conduct hardness tests to understand how the material responds to heat, which is crucial. If a product requires heat treatment testing, some strict guidelines must be followed to verify compliance. Hardness measurements are divided into three types.
　　
scratch hardness
　　
indentation hardness
　　
rebound hardness
　　
There are three tests that measure product hardness and indentation sensitivity. They are:
　　
Brinell Hardness Test (BHN)
　　
Rockwell Hardness Test (HRC)
　　
Vickers Hardness Test (HV)
　　
Goods that must be subjected to heat treatment testing have temperature-dependent characteristics. These are often referred to as the thermal properties of the material. These characteristics are related to the storage and flow of heat within substances.
　　
Thermal conductivity: The thermal conductivity of a material is a measure of its thermal conductivity.
　　
Thermal expansion: This is when a material appears to change its shape in response to changes in temperature.