The Renovation of the Acoustic House in the Recording Studio: The Unknown Secrets of the Unknown Stories -3

The Unknown Secrets of the Renovation of the Acoustic House in the Recording Studio
It is proposed that at every stage of the production process of plywood, no mineral substances such as benzene series adhesives, exposure target agents, putty, and other substances should be added. And each link requires separate company certification, with strict regulations. This is currently the first certification certificate basic standard in the global market that does not utilize technology. Wancheng Audiovisual Information has compiled some basic environmental standards and norms for the rise and fall of sound artists and healthy countries for your reference. Selected Articles from "Indoor Air Environment Standards" 1-2013-18883-2002，Chinese voiceover
When using numerical order, parameter subcategories, parameter values, unit personnel standard values, please
1 Physical formaldehyde HCHOmg/m20.113 hourly average level
2 benzene, 5 Haval, 7mg/m10.1116 hour average level
3 Benzene C7H8mg/m40.214 hourly mean
4 acetone 360mg/m20.214 hourly mean
5 Benzo [a] pyrene B (a) US coin/m31 daily average, dubbing company
6 Total VOCs emissions TVOCmg/m40.683 hours median
Code for Overall Control of Indoor Pollution in Civil Housing Construction Engineering, from 1 to 201350325-2001
Number each parameter unit to determine the inverse value
Class I, Class I, dubbing network
1. Benzene and other HCHOmg/10m3 ≤ 0.08 ≤ 0.12
2. Ammonia NH4+6mg ≤ 0.2 ≤ 0.5
3. Benzene C7 Haval H2mg ≤ 0.09 ≤ 0.09
4. Radon 222RnBqm3 ≤ 200 ≤ 400
5. Total volatile organic pollutants (benzene series) mg ≤ 0.5 ≤ 0.6
The basic standard for flame retardancy and fire prevention is that the classification level of plastic flame retardant materials decreases gradually from CQ, V-1, V-2 missiles to V-0: 1. CQ: the lowest flame retardant level in UL standard 94. It is required that for all samples with a thickness of 3 to 13 millimeters, the flame burning rate should be quickly greater than 30 millimeters per minute; For samples less than 13 millimeters thick, the combustion reaction rate is less than 2070 millimeters per minute; Or it may burn out at a depth of 200 millimeters.
2. V-1: After conducting two 10 second combustion tests on the test sample, the white flame burned out within 120 seconds. Flames and combustibles can fall.
3. V-2 missile: After two 10 second continuous combustion tests on all samples, the flame extinguishes within 300 seconds. There should be no post combustion objects falling down.
4. V-0: After two 10 second continuous combustion tests on the experimental sample, the flame burns out within 15 seconds. The national standard for food safety states that there are no combustibles falling down. Metal materials and products used in food contact are specified in 17591 "Flame retardant woven fabrics". This basic standard specifically specifies the categories, quality requirements, inspection methods, terms and definitions, as well as product packaging and labeling for products with flame retardant woven fabrics. The basic standard categorizes the flame retardancy of flame-retardant and fire-resistant woven fabrics into two levels: 1) b2 level: severe damage width (ya crossing the Dream of Red Mansions)