There are three reasons why in addition to formaldehyde companies charge differently:
1, the industry threshold is low; There are both companies and individuals, and there are many individuals, so there is no uniform standard for prices.
2. Different governance products; The cost of therapeutic products used by each company is different, and the corresponding effect is also different. For example, like the photocatalyst products used by various companies, some are more than ten yuan/liter, and some are several hundred yuan/liter.
3. Different construction technology and after-sales service. The first article mentioned that the industry threshold is low, and some practitioners may be guerrillas, so they can just shoot and leave. Remind Zhengzhou consumers to be cautious when choosing in addition to formaldehyde companies, and sign contracts to safeguard their rights and interests.