a. The purposes of the study on sustainable marketing development of the hand-woven loincloth products were to explore the buyers’ personal factors of loin products loincloth products marketing the habit of buying Thai tradition children’ clothing and to study the relationship between personal information of buyers of loin products and the marketing of loincloth products including Thai childrens clothing. And the buying habit on Thai childrens clothing. The crosstabs were administered by using the method of convenience sampling to obtain 200 samples at the event called OTOP City 2017 at Muang Thong Thani and Crafts Bangkok 2018 at Bangkok International Trade & Exhibition Center. b. Concerning the selection of samples in this study non-probability sampling method and random or convenient sampling were applied for the reason that they were suitable to access the samples to provide information related to the issues required by the research. Moreover the samples selected often cooperated to provide information more easily. Since the duration and budget of the study were limited the random sample selection was then appropriate for this study. c. The results of the study on the personal factors of the buyers of loincloth products showed that the majority were female aged 35-55 years old with the family income around 20000 - 35000 Baht per month. Most had bachelors’ degrees and worked for private companies and had two children. d. The results of the study revealed the marketing of loincloth products related to traditional Thai clothing sets Thai childrens clothing style and the detailed technique of Thai children clothing. e. Concerning the traditional Thai clothing sets it was found that the samples chose to use the loincloth (100% cotton) as a separate piece (blouses pants shirts’ and skirts) with solid colors such as blue dark blue light blue and bluish green. f. Related to the patterns of Thai children’s clothing style it was found that the samples liked the childrens clothes with collars with short sleeves. g. Regarding the details or techniques of Thai children clothing the samples chose to buy clothes with pockets but without belt ears or crotches. They were supposed to be cylindrical shorts or long-leg pants balloon skirts at knee length or knee cover length. h. As for the decoration materials it was found that the samples liked clothing with plastic buttons (with holes) and invisible plastic zippers. i. The study result on the purchasing behaviors revealed the buying places to buy Thai childrens clothes including clothing stores and shopping malls. Most opportunities to wear and reasons for buying were because they needed to wear to schools and the clothes were also comfortable to wear as well as the price was reasonable 301-500 baht per set. j. The results of the study on the buyers’ personal information of loincloth products classified by the fabric revealed that Thai childrens clothing made of loincloth fabric (100% cotton) was preferred by female private company employee buyers aged 35-55 years old with their monthly income of less than 20000 baht and had two children. k. The results of the study on the buyers’ personal information of loincloth products classified by the clothing style revealed that Thai childrens clothing made of loincloth fabric (100% cotton) was preferred by female private company employee buyers aged 35-55 years old with bachelors’ degrees with their monthly income of less than 20000 baht and had one child. l. The results of the study on the buyers’ personal information of loincloth products classified by colors revealed that Thai childrens clothing made of loincloth fabric (100% cotton) had solid colors preferred by female private company employee buyers aged 35-55 years old with their monthly income of less than 20000 baht and had two children. m. The results of the study on the buyers’ personal information of loincloth products classified by the clothing collars revealed that round-collar shirts were preferred by female private company employee buyers aged 35-55 years old with bachelors’ degrees with their monthly income of 20000– 35000 baht and had two children. n. The results of the study on the buyers’ personal information of loincloth products classified by the clothing sleeves revealed that short-sleeved shirts were preferred by female private company employee buyers aged 35-55 years old with bachelors’ degrees with their monthly income of 20000– 35000 baht and had two children. o. The results of the study on the buyers’ personal information of loincloth products classified by the clothing pockets revealed that the clothing with patched pockets were preferred by female private company employee buyers aged 35-55 years old with bachelors’ degrees with their monthly income of 20000– 35000 baht and had one child. p. The results of the study on the buyers’ personal information of loincloth products classified by the belt ears revealed that female private company employee buyers aged 35-55 years old with bachelors’ degrees with their monthly income of 20000– 35000 baht preferred the clothing without belt ears and they had two children. q. The results of the study on the buyers’ personal information of loincloth products classified by the clothing crotches revealed that female private company employee buyers aged 35-55 years old with bachelors’ degrees with their monthly income of 20000– 35000 baht preferred the clothing without the clothing crotches and they had two children. r. The results of the study on the buyers’ personal information of loincloth products and style classified by the short or pant styles revealed that cylindrical shorts or pants were mostly preferred by female private company employee buyers aged 35- 55 years old with their monthly income of less than 20000 baht and had one child. s. The results of the study on the buyers’ personal information of loincloth products and style classified by the length of shorts or pants revealed that female private company employee buyers aged 35-55 years old with their bachelors’ degrees and monthly income of less than 20000 baht and had one child mostly preferred long- leg pants. t. The results of the study on the buyers’ personal information of loincloth products and style classified by the skirt style revealed that female private company employee buyers aged 35-55 years old with their bachelors’ degrees and monthly income of less than 20000 baht and had two children mostly preferred balloon styled skirts. u. The results of the study on the buyers’ personal information of loincloth products and style classified by the length of the skirts revealed that female private company employee buyers aged 35-55 years old with their bachelors’ degrees and monthly income of 20000– 35000 baht and had one child preferred knee cover length skirts. v. The results of the study on the buyers’ personal information of loincloth products and the decoration materials classified by the clothing buttons revealed that female private company employee buyers aged 25-35 years old with their bachelors’ degrees and monthly income of 20000– 35000 baht and had one child preferred buttons without stems (with holes). w. The results of the study on the buyers’ personal information of loincloth products and the decoration materials classified by the clothing button materials revealed that female private company employee buyers aged 25-35 years old with their bachelors’ degrees and monthly income of 20000– 35000 baht and had one child preferred plastic buttons. x. The results of the study on the buyers’ personal information of loincloth products and the decoration materials classified by the clothing zippers revealed that female private company employee buyers aged 25-35 years old with their bachelors’ degrees and monthly income of 20000– 35000 baht and had one child preferred invisible zippers. y. The results of the study on the buyers’ personal information of loincloth products and the decoration materials classified by the zipper materials revealed that female private company employee buyers aged 25-35 years old with their bachelors’ degrees and monthly income of 20000– 35000 baht and had one child preferred plastic zippers. z. The results of the study on the buyers’ personal information of loincloth products and the buying behavior classified by the buying location revealed that female private company employee buyers aged 25-35 years old with their bachelors’ degrees and monthly income less than 20000 baht and had two children. aa. The results of the study on the buyers’ personal information of loincloth products and the buying behavior classified by the buying opportunities revealed that female private company employee buyers aged 35-55 years old with their bachelors’ degrees monthly income of 20000– 35000 baht and had one child. bb. The results of the study on the buyers’ personal information of loincloth products and the buying behavior classified by the buying reason revealed that female private company employee buyers aged 35-55 years old with their bachelors’ degrees monthly income of 20000– 35000 baht and had one and two children preferred to buy comfortable clothing. cc. The results of the study on the buyers’ personal information of loincloth products and the buying behavior classified by the product price revealed that female private company employee buyers aged 35-55 years old with their bachelors’ degrees monthly income of 20000– 35000 baht and had two child preferred 301 – 500 baht per clothing set.

Today used of smartphone or mobile phone are popular for users who eager in new technology. Smartphone are similar to a small notebook that have many kinds of functions of mobile phone. Android is the popular operation that used in smartphone and mobile phone because it can be used to increase abilities with many applications that suitable with phones.

The objective of this research is to preparation of dye powder from natural dyes. The conditions of preparation of dye powder and properties of natural dye powder were studied. The natural dyes were used in this research containing of Lac Ebony heart wood Sappan heart wood Turmeric and dried Butterfly pea. The natural dyes powder were prepared by three methods; oven drying salt adsorption and salting out. The natural dyes powder were dyed on silk fabric and then characterized by colour strength (K/S) washing fastness and light fastness. The results showed that the dye powder from dried Butterfly pea could not be prepared by dye powder preparation used in this research because of the dye power was not stable. The dyes powder from Lac Ebony heart wood Sappan heart wood and Turmeric were prepared by all three methods. The oven drying and salting out methods showed higher K/S than salt adsorption method. And the K/S of dyes powder from oven drying and salting out methods were not significant. In the oven drying method showed good K/S on silk fabric dyed from the turmeric dye powder. And salting out method showed good K/S on silk fabrics dyed from Lac Ebony heart wood and Sappan heart wood dyes powder. The different dye powder preparation methods did not effect on the colour appearance. The washing fastness of dyed silk fabric from different preparation methods were not significant. The dye powder of Lac Ebony heart wood Sappan heart wood showed good light fastness and the Turmeric dye powder showed poor light fastness on silk fabric.

The purpose of this research is to facilitate technology of limiting excess electricity from the source before supplying to the electrical appliances. The distribution of electricity by Metropolitan Electricity Authority (MEA) frequently exceeds the needs of households and factories due to the fact that the voltage has to be enough to send electricity to users who are located further at the end of the voltage grid lines. Most electrical appliances are designed to perform at optimum voltage of 220 Volt. The voltage optimization system controls the incoming voltage to fit the optimum voltage of electrical appliances which will reduce the overheating phenomenon and thus lengthen the lives of electrical appliances. It can save 8-14% of total energy being consumed and potentially reduce CO2 emission. This analysis system can be used for industries in the range of small to large companies. From the development of remote monitoring using a control via internet or 3G/4LTE the voltage optimization system showed practical power saving results of the reduced power usage and lengthen the lives of electrical appliances; that leads to reduction of emerging electricity resource eradication of natural resources increase the chance of marketing competition and energy sustainable