Do Intellectual Capital Elements Spur Firm Performance? Evidence from the Textile and Apparel Industry in China

-is paper examines how investment in intellectual capital (IC) elements by textile and apparel companies improves firm performance measured in terms of profitability, market value, and productivity. -e modified value-added intellectual coefficient (MVAIC) model is applied to measure IC. Using a panel of 35 Chinese textile and apparel companies for a six-year period (2013–2018), the results show that physical and human capitals are the strong factors that contribute to firm performance. In addition, relational capital negatively influences profitability andmarket value, and structural capital and innovation capital have a negative impact on employee productivity. We also find that the MVAICmodel performs better in measuring IC than the original value-added intellectual coefficient (VAIC) model. -is paper can provide some insights for corporate managers to enhance firm performance and gain competitive advantage by proper utilization of IC in traditional industries.


Introduction
e resource-based theory emphasizes the heterogeneity of firms' resources and the existence of capabilities. Nowadays, managing and upgrading knowledge resources determine the success of any organization [1][2][3]. In the knowledge economy, intellectual capital (IC) as an intangible resource can help a firm to generate economic returns and build competitive advantage along with tangibles [4][5][6][7][8].
e textile and apparel industry is traditionally laborintensive, and this old manufacturing industry has become a sunset industry with low added-value products because of low level of technological innovation [9]. It requires large input of water and energy in fabric production, which could bring serious damage to ecological environment by various pollutants. is industry is also one of the most important customer merchandise industries with a long supply chain from the distribution of fibers to end users or consumers [10]. Textile and apparel companies generally have tight connections with suppliers, manufacturers, intermediaries, and customers in the whole product life cycle [11]. In recent years, this industry is exposed to the increase in the price of raw materials such as cotton, which lowers the profits of manufacturers. In order to overcome some barriers, firms started to search a new way with production of high-tech and technically demanding textiles.
China's textile and apparel industry as the pillar of national economy accounts for about one-fifth of total production in the world [12]. Its comparative advantage in the global market is not obvious [13], and it is still at the low end of the global value chain [14]. In the face of fierce market competition, textile and apparel companies are forced to cut prices, which leads to lower profitability. In addition, there is an increasingly great demand for clothing and footwear products in China's domestic market, but there are not many internationally influential brands of domestic companies. Due to the outbreak of the novel coronavirus (COVID- 19), the production and export of this industry experienced a great decrease from January to April in 2020 compared with the previous year [15]. e rising costs of domestic production, insufficient domestic and foreign demand, trade barriers, and other factors have led to the continuous decrease in industrial competitiveness [16][17][18]. erefore, it is urgently important that this industry transform industrial structure from the energy-consuming pattern to the eco-environment-oriented pattern. Intangibles will play a significant role in this transformation, especially IC. e objective of this paper is to explore empirically the impact of IC elements on firm performance, using China's textile and apparel companies as our selected sample. Following Ge and Xu [19], Xu and Liu [20], and Liu et al. [21], we use the modified value-added intellectual coefficient (MVAIC) model as a measure of IC in comparison with pulic's [22] original value-added intellectual coefficient (VAIC) model.
ere are few studies that are conducted in the context of China, and the IC's impact in textile and apparel industry is not fully understood. In addition, empirical analysis in the current IC literature is still based on the original VAIC model by ignoring the role of relational capital (RC) and innovation capital (INC) in value creation. erefore, this study contributes to the theoretical perspective by employing the MVAIC model with the inclusion of them. Finally, it might help managers of China's textile and apparel industry to enhance firm performance and gain their competitiveness through effective IC utilization.
In the remaining parts of the paper, a literature review is provided in Section 2. Section 3 develops the relevant hypotheses, followed by Section 4 detailing the methodology. Section 5 shows the empirical results, and Section 6 discusses these results. Finally, Section 7 is the conclusion.

IC Definition, Classification, and Measurement.
ere are many definitions of IC explained in the current IC literature. At the initial stage, Stewart [23] described IC as the tools of intangibles in creating wealth. It was defined as the set of all knowledge possessed by the employees and the company [24]. Additionally, Edvinsson and Malone [25] defined the difference between a firm's market value and book value as IC.
Several methods have been proposed to measure IC. Among them, the VAIC model explains the efficiency of value creation in any organization depending on capital employed efficiency (CEE), human capital efficiency (HCE), and structural capital efficiency (SCE). Its simplicity and data availability lead to the wide use of this method in measuring IC. However, it also suffers from several weaknesses. First, this model only measures past IC based on the historical data from financial reports. Second, the synergy effects between different forms of tangible and intangible assets are not taken into account in this model [39]. ird, it neglects the existence of RC and INC that is considered as the measures of the efficiency of IC [40]. erefore, we will employ the MVAIC model to systematically measure IC in this paper. Figure 1 demonstrates the classification of a company's assets.

IC and Firm Performance.
Although much research has been devoted to developed countries, emerging markets have drawn the attention of scholars in the current IC research [6, 8, 19-21, 29-33, 35, 36, 39-42]. In addition, most studies use a three-dimensional framework to analyze IC performance based on the original VAIC model. Table 1 shows an overview of the relationship between IC and firm performance, but the results are not consistent.

Hypotheses Development
CEE refers to all necessary financial funds and physical capital in the pulic's [22] VAIC model. Researchers such as Chen et al. [40], Tandon et al. [55], Dzenopoljac et al. [56], and Poh et al. [57] documented a positive impact of CEE on organizational performance. Taking agricultural enterprises as the sample, Xu and Wang [49] found a positive relationship between CEE and firms' profitability and productivity. A study on commercial banks by Oppong and Pattanayak [58] found CEE to be positive and significant with ATO and employee productivity (EP). In the light of these arguments, the study hypothesizes the following.
Hypothesis 1 (H1). Physical capital can enhance firm performance in China's textile and apparel industry.
Concerning HC, Nimtrakoon [27] found that HC contributes most to financial performance (margin ratio and ROA). Similarly, Xu and Wang [5], Xu et al. [32], and Xu and Li [33,35] confirmed this positive relationship. Using the VAIC model, Smriti and Das [59] in their study observed that HC positively affects firm productivity while its impact on profitability is not significant in Indian listed companies. Also, a study in an emerging economy (Ghana) by Oppong et al. [6] showed that HCE positively affects firm productivity. Conversely, Kasoga [52] documented this negative relationship using ROA, ATO, sales growth, and Tobin's Q as performance indicators. erefore, the current study hypothesizes the following.
Hypothesis 2 (H2). HC can enhance firm performance in China's textile and apparel industry. e findings of Kasoga [52] revealed a significant and positive relationship between SCE and financial performance. In the context of Russia, Andreeva and Garanina [60] pointed out that SC contributes to the performance of manufacturing companies. Likewise, Alipour [61], Soriya and Narwal [62], and Onyekwelu et al. [63] found that SCE does drive the firms' performance. Examining the association between IC and productivity, Oppong and Pattanayak [58] found that SC component plays a role in improving the productivity of public and private banks. Liu et al. [21] argued that SC has the strongest impact on financial competitiveness in China's renewable energy sector. erefore, the third hypothesis is as follows.   [5] found it to be the most influential factor to financial performance and sustainable growth. e empirical evidence from Indian pharmaceutical companies by Gupta et al. [65] confirmed a correlation between RC and firm profitability. A study on manufacturing firms by Xu and Li [35] similarly recorded a strong association between RC and profitability and productivity for a fiveyear period (2012-2016). Xu et al. [66] also documented a positive relationship between RC and corporate sustainable growth. erefore, we propose the following hypothesis.
Hypothesis 4 (H4). RC can enhance firm performance in China's textile and apparel industry.
INC refers to the skills and capabilities that a company needs to create new products and services and to place them promptly on the market [67]. It can drive wealth generation, economic development, and human well-being [68,69]. Chen et al. [40] claimed that INC has a positive effect in the MB, ROA, and SG models. e findings of Lu et al. [70] found that INC positively enhances firm performance of Chinese firms that accepted Venture-Capital Syndication funding. Bayraktaroglu et al. [71] declared that INC directly leads to the increase in firms' productivity. As Ni et al. [72] revealed, INC might be beneficial for firms to improve firm value because firms need to search for new ideas to achieve innovation. erefore, we propose the following hypothesis.

Data Source.
is paper is based on the secondary data that are obtained from the China Stock Market and Accounting Research (CSMAR) database. e sample includes textile and apparel companies listed on the Shanghai and Shenzhen stock exchanges from 2013 to 2018. After screening and removing companies with missing information, companies with debt ratio great than 1, and special treatment (ST) companies, an unbalanced panel of 35 companies with 165 observations has been left for estimation.

Variables
(1) Dependent Variables. Firm performance (PER) is measured in three aspects: profitability, market value, and productivity. ROA (measured by the ratio of net income to average total assets) and ROE (measured by the ratio of net income to average shareholders' equity) measure the profitability of the companies. MB is used to measure market value of the companies. EP is calculated as the ratio of pretax income (unit: 10,000 yuan) to the number of employees. It is included as a measure of productivity in the IC literature [40,58,[73][74][75][76].
where i stands for the individual firm; t stands for the year; β is the presumed parameter; and ε is the measurement error term.

Descriptive Statistics.
Descriptive statistics are depicted in Table 2. In the observed period (2013-2018), it can be noticed that profitability, measured by ROA and ROE, has a mean score of 0.0427 and 0.0650, respectively. e high value of MB implies that on average, market value of textile and apparel companies is higher than their book value. EP has a mean of 7.8857 with a maximum of 76.8660 and a minimum of −121.3850. An increase in EP means that employees make more contribution to the firm. e average CEE in our sample is 0.2448. As for IC elements, IC performance of companies in textile and apparel sector mainly depends on HC and RC. It is worth noticing that the standard deviations of HCE and RCE are higher. INC seems to create the smallest amount of value over the study period. Companies with low level of R&D expense are more likely to restrict their innovative ability of new product development and patent application, which will lead to low competitiveness and intangible assets. Also, the average ratio of total leverage is about 35%. e mean value of SIZE and AGE is 22.0108 and 2.7079, respectively. Table 3 shows the results of correlation analysis. e results show that ROA and ROE are significantly positively correlated with CEE, HCE, and RCE. MB is negatively correlated with CEE, HCE, and RCE. EP proxy used for productivity is positively correlated with CEE, HCE, and RCE. In addition, the variance inflation factor (VIF) values are less than 10, indicating that multicollinearity is not a major issue. Table 4. e Hausman tests indicate that the fixed effects model is appropriate in estimating the results of ROA, ROE, and MB, and the random effects model is suitable when EP is the dependent variable. It is noticeable that the MVAIC model has higher adjusted R 2 values with ROA, ROE, and MB being dependent variables. However, for EP, the adjusted R 2 value slightly decreases in the MVAIC model. On the whole, the MVAIC model is more applicable to measure IC than the original VAIC model.

Regression Results. Regression results are shown in
When ROA and ROE are the dependent variables, CEE and HCE play an important role in increasing the profits of textile and apparel companies. SCE exerts a positive impact on only the ROE indicator. However, RCE is found to negatively affect the profitability in this traditional industry. INC has no significant impact on profitability indicators. LEV is negatively associated with ROA and ROE.    Model (2) Model (1) Model (2) Model (1) Model (2) Model (1) Model (  Regarding the variable MB, physical and human capitals positively influence MB in the MVAIC model. e impact of two IC elements (i.e., SC and INC) is not significant while RC has a negative and significant impact, which indicates that investors do not consider the values of IC in their decision. Pal and Soriya [77] found that IC does not help Indian textile companies to be more competitive in the increasingly dynamic environment.
In case of productivity measured by EP, physical and human capitals have a positive impact while structural and innovation capitals have a negative impact in the selected companies. e results are inconsistent with Oppong and Pattanayak [58] who stated that CEE is the only component that has a positive impact on EP and Phusavat et al. [73] and Bontis et al. [76] who concluded that human resources positively affect EP. Table 5 shows the summary of regression analysis in our study. From the results, it can be concluded that physical assets and HC are the most influential factors in improving the performance of Chinese textile and apparel companies.

Discussion
Physical capital has the greatest influence on all performance indicators. Textile and apparel companies belong to manufacturing industry and traditionally depend on machinery and equipments. e findings are in line with Ge and Xu [19], Xu and Liu [20], Xu and Wang [31], and Xu and Li [33,35]. However, in the Industry 4.0 era, such companies are required to achieve their industrial transformation. It is necessary for Chinese textile and apparel companies to increase investment in fixed assets and speed up the pace of upgrading equipment in order to gain international competitiveness under complex environment [17]. Table 5 shows that the better the HC of a firm is, the better its performance is. Although textile and apparel industry creates huge amount of jobs, most companies are still difficult to attract and retain high-quality employees. It should be pointed out that globally about 80% of workers are women in this industry [78]. e lack of training and education is a primary challenge the textile and apparel companies face in sustainable development [10].
As for SC, a survey conducted by Malinowska-Olszowy [67] showed that textile and apparel industry does not pay attention to the special role of intellectual property, especially patents. ese may become a source of success for innovative textile and apparel manufacturers. In addition, the use of IT can improve corporate responsiveness and increase operational flexibility. Andersen and Segars [79] concluded that investment in IT has an indirect impact on performance enhancement in the US textile and apparel industry. Innovation in information and communications technology (ICT) and logistics technology is also needed in this sector that focuses on a mass production [80]. In China's economic transformation, such companies have begun to realize the salient importance of corporate culture, routines, processes, and technology.
RC seems to become a detrimental factor to firm performance improvement. However, the increasing interdependency of supply chain in this sector emphasizes stronger partnership-based alliances, thus reducing production costs [81]. In an emerging market (Vietnam), the best selection of suitable suppliers in this sector has been the concern of many practitioners that is affected by many unpredictable and uncertain issues [82]. Textile and apparel companies should determine the best supplier selection based on sourcing country, organization features (i.e., relationship, capability, and company's image) and performance metrics (i.e., quality, costs, delivery, and service) [83].
INC is not observed to stimulate firm performance in China's textile and apparel industry. In China, brand counterfeiting and imitation are serious, and most companies' revenue depends mainly on processing without automation or robots [16]. Malinowska-Olszowy [84] found that the poor performance of textile and apparel companies in Poland is caused by lack of introducing innovations. In Vietnam, undeveloped technology is a huge barrier to productivity improvement of this sector [85]. However, technology innovation ability in this industry has been improving since 2005 [9]. Furthermore, production time and reaction to trends are greatly shortened in this industry [86], which requires brand designers to have more innovative and novel ideas.

Conclusions
e study measures the impact of IC elements on firm performance on a sample of 35 textile and apparel companies listed over a period of 6 years (2013-2018). e MVAIC method is applied to measure the efficiency of IC, and firm performance is measured through ROA, ROE, MB, and EP. e results show that the MVAIC model is more appropriate in IC measurement than the conventional VAIC model of Pulic [22]. Regarding IC elements, HC exerts a positive impact on firm performance whereas SC and INC have a negative impact on only employee productivity. RC is Mathematical Problems in Engineering found to negatively influence profitability and market valuation. In addition, physical capital is the most influencing contributor to firm performance improvement. is study has several valuable implications. Firstly, management should incorporate IC strategies into their business strategies, effectively manage the level of IC, and make reasonable investments in each IC elements. Secondly, employees should get sufficient training to grasp the latest innovative technology and procedures applied in their production.
irdly, corporate managers should also pay attention to SC, RC, and INC because they are also which drive firm performance in China's economic transformation. More importantly, they should develop new design concept and conduct more international cooperation and exchanges, thus improving firm profitability. In addition, these companies need to adopt green technology and develop new ecological protection products. ey should also implement enterprise resource plan (ERP) system and computer integrated manufacture system (CIMS) to realize great-leap-forward development and upgrade industrial structure. Finally, the government should create a more favorable external environment, establish the industry management system, and provide more policy supports for R&D activities.
e current study has some limitations that should be addressed for future research. First, the research is restricted to textile and apparel companies, and future studies may be extended to other business industries. Second, more countries should be included in the future. Besides that, future studies may consider more variables in assessing IC toward firm performance.

Data Availability
e data used to support the findings of this study are available from the corresponding author upon request.

Conflicts of Interest
e authors declare that they have no conflicts of interest.